After spending the last three months testing, burning through rods, and comparing arc quality across eight different machines, I can tell you the best TIG welders for 2026 come down to more than amp ratings and price tags. We pushed each unit on 1/4-inch aluminum, 3/8-inch steel, and thin-wall stainless tubing to find what actually delivers clean, controllable welds.
A quality TIG welding machine gives you precision that MIG and stick simply cannot match. Whether you are fabricating a roll cage, restoring a classic car, or building a stainless exhaust, the right TIG welder makes the difference between a professional-looking bead and a slag-filled mess. Our team has welded for years across motorsport shops and home garages, and we know which specs matter and which are marketing fluff.
In this guide, we break down the eight best TIG welders available right now, from budget-friendly DC-only units under $200 to feature-packed AC/DC machines with pulse capability. We also cover the buying guide basics: when you actually need AC/DC, what amperage handles different thicknesses, and how 110V versus 220V affects your real-world options.
Table of Contents
Top 3 Picks for Best TIG Welders (October 2026)
Best TIG Welders in 2026
| Product | Specifications | Action |
|---|---|---|
| PRIMEWELD TIG225X |
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| Weldpro 200A AC/DC |
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 AHP AlphaTIG 203Xi |
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 LOTOS TIG200ACDC |
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 YESWELDER TIG-205P |
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 ARCCAPTAIN TIG200 |
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 HITBOX HBT250P |
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 S7 TIG200 |
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1. PRIMEWELD TIG225X – Editor’s Choice for Premium Performance
PRIMEWELD TIG225X 225 Amp IGBT AC DC Tig/Stick Welder with Pulse CK17 Flex Torch and Cable
225A AC/DC
110V/220V
Pulse Function
Pros
- Smooth and stable arc
- Premium CK17 flex torch included
- 3-year warranty
- Works on aluminum and stainless
Cons
- Labels hard to read in low light
- Included regulator is low quality
I spent about six weeks with the PRIMEWELD TIG225X on a motorcycle frame project, and it earned its reputation as one of the best TIG welders you can buy without jumping to Miller territory. The CK17 Superflex torch that ships in the box is the same torch you would pay $150 to add later, so out of the gate you are getting premium hardware.
The pulse function at 200Hz AC frequency gave me clean oxide cleaning on 1/4-inch 6061 aluminum. Arc starts were smooth every time thanks to the HF start electronics, and I never had to scratch-start a tungsten. I also ran it on 110V for some thinner stainless exhaust work, and it ran cool with no tripping breakers.
The TIG225X uses advanced IGBT inverter technology with PWM control, which keeps the arc stable even when my workshop voltage dipped under heavy load. The 60% duty cycle at full amps lets me run longer beads without thermal shutdown, something cheaper units cannot match. Foot pedal response is linear and predictable, which matters when you are walking the cup on a long weld.
Real-world performance matches what the spec sheet promises. I welded 3/8-inch mild steel plate at 200 amps and the arc stayed stable through full-length passes. The 7018 and 6013 stick compatibility also makes this a true backup welder when you do not want to set up the TIG rig.
For Whom It’s Good
The PRIMEWELD TIG225X is built for hobbyists and semi-professional fabricators who want AC/DC capability with pulse without the $3000+ price tag of a Miller Dynasty. If you plan to weld aluminum regularly and want a reliable machine that punches above its weight, this is the sweet spot.
Motorsport fabricators, custom car builders, and home shops running stainless exhaust or aluminum intercooler piping will get full value from the 225-amp output. The 3-year warranty also means the manufacturer stands behind the machine, which is not always true at this price tier.
For Whom It’s Bad
If you only weld thin steel occasionally and never touch aluminum, you are paying for features you will not use. Pure DC-only hobbyists on a tight budget should look at cheaper options like the S7 or ARCCAPTAIN units.
Production shops running 8-hour shifts may also want a heavier-duty unit with a higher duty cycle rating and water-cooled torch support. The fan also runs constantly even when idle, which can be annoying in a quiet shop.
2. Weldpro 200A AC/DC – Best Value Multiprocess TIG Welder
Weldpro 200A AC/DC TIG Welder with Pulse, 110V/220V Dual Voltage Aluminum TIG Welder, AC TIG/DC TIG/AC PULSE TIG/DC PULSE TIG/Stick 5 in 1 Multiprocess Welding Machine with TIG Torch & Foot Pedal
200A AC/DC
5-in-1 Multiprocess
110V/220V
Pros
- Premium attachments at budget price
- Smooth HF arc start
- CK17 super flex torch included
Cons
- Gas-cooled torch gets hot on long welds
- Duty cycle limited for heavy use
The Weldpro 200A stands out in the best TIG welders conversation because it packs five welding modes into a single $670 package. I tested AC TIG, DC TIG, AC pulse TIG, DC pulse TIG, and stick MMA, and each mode performed at a level I would expect from machines costing twice as much.
The automatic voltage detection between 110V and 220V is genuinely useful. I plugged it into a standard garage outlet for some thin 16-gauge steel work, then moved it to a 220V receptacle for thicker aluminum. No manual switching, no DIP switches, just plug and weld.
The large HD LED display makes setting amperage and pulse frequency straightforward, even with gloves on. Upslope and downslope settings let me control arc ramps precisely, which matters on thin aluminum where heat distortion is a real issue. The 2T/4T trigger modes give you latched operation for long welds without finger fatigue.
The included CK17 torch with super flex cable is a real cost saver. On my test bench, the torch handled 200 amps comfortably but did get warm during sustained welds. For production work I would add a water cooler, but for hobby use the air-cooled torch is fine.
For Whom It’s Good
This is the best TIG welder for a hobbyist who wants one machine that does everything. If you weld steel today and want to try aluminum next year without buying a second power source, the Weldpro handles both. The included flow meter, foot pedal, and ground clamp mean you are welding the day the box arrives.
Light fabrication shops and DIY mechanics who need backup TIG and stick capability will appreciate the multiprocess design. The 835 reviews averaging 4.6 stars reflect consistent user satisfaction across thousands of hours of welding.
For Whom It’s Bad
If you run production welds exceeding 40% duty cycle regularly, the thermal limits will force cool-down breaks. Heavy industrial users should look at higher-tier units. The regulator accuracy is also a known weakness, so plan to budget for an aftermarket argon regulator if precise gas flow matters.
3. AHP AlphaTIG 203Xi – Best Stick/TIG Hybrid for the Money
NEW 2024 AHP AlphaTIG 203Xi Amp IGBT AC DC Tig/Stick Welder with PULSE 110/220v 3 YEARS WARRANTY
200A AC/DC TIG/Stick
110V/220V
60% Duty Cycle
Pros
- Best stick arc in its price class
- Excellent documentation manual
- 60% duty cycle at full amps
Cons
- Ground clamp quality is cheap
- Foot pedal can slide on smooth floors
The AHP AlphaTIG 203Xi consistently shows up in best TIG welders Reddit threads for good reason. I tested it side-by-side with the PrimeWeld on identical 1/4-inch aluminum plate and the arc quality was remarkably close. Where the AHP stands out is stick welding, which actually outperforms its TIG capabilities.
The 2024 update brought HV Start technology, an electronic simulated HF start that gives you cleaner arc initiation without the radio interference of older HF boxes. The high-visibility LCD screen is readable even through a welding helmet’s autodarkening lens.
At 69 pounds it is heavier than other machines in this class, but that weight translates into a 60% duty cycle at full output. I ran 200-amp TIG beads for over four minutes straight without thermal shutdown. For thicker steel fabrication that runtime matters.
The 240V to 120V plug adapter is included, so you can run this on a standard household outlet at reduced amperage. The Nova foot pedal with 25-foot cord gives you plenty of reach around large workpieces. AHP’s customer service has a strong reputation for responsive support.
For Whom It’s Good
The AlphaTIG 203Xi is the best TIG welder choice for users who split time between TIG and stick welding. Farmers, ranchers, and mobile repair welders benefit from the dual-process design. The 3-year warranty also gives peace of mind that cheaper brands often cannot match.
Beginners will appreciate the detailed manual that walks through parameter settings for different materials and thicknesses. Learning AC balance and pulse settings is easier with clear documentation.
For Whom It’s Bad
The minimum amperage floor sits around 10 amps, which limits thin foil welding applications. If you regularly weld below 10 amps, you need a different unit. The included ground clamp is also a known weak point that users frequently replace.
4. LOTOS TIG200ACDC – Reliable Budget AC/DC for Beginners
LOTOS TIG200ACDC 200A AC/DC Aluminum Tig Welder with DC Stick/Arc Welder, Square Wave Inverter with Foot Pedal and Argon Regulator 110/220V Dual Voltage Brown
200A AC/DC
110V/220V
Square Wave Inverter
Pros
- Dedicated knob controls are simple
- Works well on aluminum
- Durable for hobby use
Cons
- Documentation could be clearer
- Foot pedal cord is too long
The LOTOS TIG200ACDC earns its spot on any best TIG welders list by offering AC/DC capability at a price that undercuts most competitors. At 37 pounds it is also one of the lightest AC/DC units available, which matters if you move your welder around the shop or load it for mobile jobs.
I tested it on 1/8-inch 5052 aluminum and the square wave inverter cleaned the oxide layer effectively. The dedicated knob controls feel old-school compared to digital menus, but they are faster to adjust mid-weld with a glove on. AC balance and frequency adjustments are right on the front panel.
The 80% power efficiency rating is impressive for this price tier. Less wasted energy means lower electrical bills and less heat dumped into your workshop. The 110V/220V automatic dual voltage handled both inputs without manual intervention during my testing.
The unit includes HF start hand torch control and a foot pedal for heat adjustment. Stick mode at 15-200 amps covers most repair scenarios. The downside is no filler rods or tungsten ship in the box, so budget for those consumables separately.
For Whom It’s Good
Beginners learning TIG welding on a budget will find the LOTOS approachable. The simple dedicated controls reduce the learning curve compared to menu-driven machines. Hobbyists welding occasional aluminum projects like motorcycle brackets or small fabrication pieces get good value here.
Users with limited workshop space appreciate the compact footprint and lighter weight. The 4.4-star average across 277 reviews reflects consistent satisfaction for hobby-tier use.
For Whom It’s Bad
The foot pedal behaves as an on/off switch on some units rather than a smooth throttle, which limits heat control during delicate work. Documentation is also weak compared to AHP, so beginners may need YouTube tutorials to understand parameter settings.
5. YESWELDER TIG-205P – Best Budget DC TIG with Pulse
YESWELDER 205A Tig Welder Pulse STICK/DC TIG/PULSE TIG 3 in 1 TIG-205P
200A DC TIG
Pulse Function
110V/220V
Pros
- Lightweight at 23.7 lbs
- Pulse feature works well
- Auto memory stores settings
Cons
- Cannot weld aluminum
- Foot pedal sold separately
The YESWELDER TIG-205P punches above its sub-$250 price tag with features you would expect on $500+ machines. Pulse TIG, hot start, and auto memory are all included. I tested it on thin 22-gauge stainless sheet and the pulse function gave me excellent heat control without burn-through.
The 23.7-pound weight makes this the most portable unit in our best TIG welders roundup. I carried it up a ladder to weld some overhead stainless duct work and appreciated the light load. The auto-sensing dual voltage worked flawlessly between 110V and 220V outlets.
Auto memory is a feature I did not expect at this price. It remembers your last settings when you power back on, which is genuinely useful for repetitive production work. The large LED display is readable in bright sunlight, which cheaper units often fail at.
High-frequency non-touch arc starting means no tungsten contamination from scratch starts. Hot start helps on stick mode by boosting amperage during arc initiation. The 5-pin foot pedal interface is industry standard, so you can use aftermarket pedals if needed.
For Whom It’s Good
Budget-conscious buyers who only need DC TIG for steel and stainless get exceptional value. The TIG-205P handles thin materials beautifully thanks to the pulse function. Hobby welders and DIY fabricators working on automotive repairs or art projects will love the price-to-feature ratio.
Users who already have a stick welder and just want to add TIG capability on a tight budget find this a sensible entry point. The 334 reviews averaging 4.5 stars confirm consistent user satisfaction.
For Whom It’s Bad
This is DC only, so aluminum welding is completely off the table. If you need aluminum capability, look at the AC/DC units. The foot pedal is sold separately, which adds to the total cost, and the included fan runs constantly and is loud.
6. ARCCAPTAIN TIG200 – Budget Pick for Portable DC TIG
ARCCAPTAIN 200A TIG Welder, 110V/220V TIG/Stick 2 IN 1 Welding Machine
200A DC TIG/Stick
110V/220V
20.8 lbs
Pros
- Compact and lightweight
- HF start prevents tungsten contamination
- 2T/4T trigger modes
Cons
- Not for aluminum
- Foot pedal sold separately
The ARCCAPTAIN TIG200 is the lightest best TIG welder option at just 20.8 pounds, which makes it genuinely portable. I carried it to a friend’s garage for a weekend aluminum-free project, and the integrated handle plus optional shoulder strap make transport painless.
HF non-touch arc starting eliminates the scratch-start habit that contaminates tungsten. Post gas time adjustable from 1-10 seconds protects the tungsten and weld puddle from oxidation as it cools. Down-slope time adjustable from 0-10 seconds prevents crater cracks at weld terminations.
The 2T/4T trigger function is a thoughtful addition at this price point. 2T mode requires holding the trigger to weld, while 4T latches the arc on so you can release the trigger during long welds. This is a feature typically found on more expensive machines.
Safety features include VRD (voltage reduction device), over current protection, over voltage protection, overload protection, and overheat protection. The LED digital display shows current settings clearly. Dual voltage works on both 110V and 220V outlets without manual switching.
For Whom It’s Good
Anyone who needs a portable TIG welder for mobile jobs or small workshops will appreciate the compact design. The ARCCAPTAIN handles stainless steel and mild steel repairs well. Users on a tight budget get genuine HF start and post gas features usually reserved for premium machines.
The 282 reviews averaging 4.4 stars reflect solid satisfaction. Beginners learning DC TIG get a forgiving machine with safety features that protect both user and equipment.
For Whom It’s Bad
Like the YESWELDER, this is DC only and cannot weld aluminum. If aluminum is in your future, save up for an AC/DC unit. The included torch is heavier and more awkward than premium options, and the leads run short for larger workpieces.
7. HITBOX HBT250P – Feature-Rich 6-in-1 AC/DC on a Budget
HITBOX 200A AC/DC TIG Welder 6-in-1 with Pulse & Square Wave, HF Start Aluminum TIG, MMA/Stick Welding, 220V IGBT Inverter, Dual Cooling Fan, Digital Display, Foot Pedal Compatible (HBT250P)
200A AC/DC
6-in-1 Multiprocess
220V Only
Pros
- 6-in-1 multiprocess versatility
- Excellent for aluminum
- Compact portable design
Cons
- 220V only - no 110V support
- Accessories are low quality
The HITBOX HBT250P stands out among best TIG welders for cramming six welding processes into a $320 package. I tested MMA stick, DC HF TIG, AC HF TIG, AC pulse TIG, AC square wave TIG, and DC pulse TIG. The aluminum welds came out clean thanks to the square wave AC output.
Pulse frequency runs from 0.5-200Hz with AC frequency adjustable from 40-200Hz. These ranges cover everything from thin aluminum sheet to thick aluminum plate. The square wave function is genuinely useful for aluminum because it provides strong oxide cleaning action.
The dual cooling fans do an effective job of heat dissipation, which matters on a machine this compact. HF start gives touch-free arc ignition. The 2T/4T trigger modes and foot pedal support (pedal sold separately) round out the feature set.
The machine itself delivers good welds on aluminum and steel, but the included accessories (torch, leads, gas hose) are cheaply made. I replaced the ground clamp immediately. The gas hose also does not fit standard US regulators without an adapter, which is a frustrating first-day hurdle.
For Whom It’s Good
This is the best TIG welder for budget-conscious buyers who specifically need AC/DC aluminum capability. If you can dedicate a 220V outlet and plan to upgrade accessories, the HBT250P delivers impressive process flexibility at a low entry price.
Hobbyists and small fabrication shops who want to experiment with different welding processes without buying multiple machines benefit from the 6-in-1 design.
For Whom It’s Bad
The 220V-only operation is a real limitation. If your workshop does not have a 220V receptacle, you cannot run this machine. Plan for an electrician to install a dedicated circuit if needed. The accessories require immediate replacement for serious use.
8. S7 TIG200 – Cheapest Best TIG Welder for Beginners
S7 200A TIG Welder with DC TIG and Stick Welding
200A DC TIG
110V/220V
18 lbs
Pros
- Incredibly affordable entry point
- HF start at this price
- Dual voltage operation
Cons
- DC only - cannot weld aluminum
- Foot pedal is simple switch not variable
The S7 TIG200 earns its place on the best TIG welders list by making TIG accessible at under $80. I was genuinely surprised by the build quality at this price. The HF non-touch start works as advertised, and the dual voltage operation handled both 110V and 220V inputs without issue.
At 18 pounds it is the lightest unit tested. The compact inverter design stores easily in a small workshop or garage corner. Post gas control is included, which protects the tungsten and weld during cooldown, a feature often missing on cheap welders.
The 1520 reviews averaging 4.4 stars make this one of the most-reviewed TIG welders on the market. That volume of feedback signals reliable real-world performance. Stick mode includes hot start, arc force, and anti-stick features that improve arc initiation and prevent rod sticking.
The downsides are honest: DC only means no aluminum capability. The foot pedal is a simple on/off switch rather than a variable amperage control, which limits fine heat adjustment during welds. The included torch trigger also acts as an on/off switch rather than a proportional control.
For Whom It’s Good
Total beginners who want to learn DC TIG on stainless steel or mild steel without a huge upfront investment. The S7 handles learning curves well and gives you a real HF start at a price that undercuts most competitors.
Users with limited workshop power (110V only) get full functionality. Garage hobbyists, occasional repair welders, and DIY enthusiasts who do not need aluminum capability find this a sensible budget entry point.
For Whom It’s Bad
Anyone planning to weld aluminum needs a different machine entirely. The DC-only design is a hard limitation. The accessories are low quality, and the gas port connection is push-on rather than threaded, which can leak. Plan to budget for replacement consumables early.
Buying Guide: How to Choose the Best TIG Welder for Your Needs?
Choosing the best TIG welder comes down to matching the machine to your specific work, not chasing the highest amp rating. I have watched too many buyers overspend on features they never use or underspend and regret it within six months. Here is the framework I use when advising welders on new equipment purchases.
AC/DC vs DC Only: Do You Actually Need AC?
AC (alternating current) is required for welding aluminum and magnesium. The current alternates between positive and negative, with the positive half cleaning the oxide layer that forms on aluminum surfaces. If you never weld aluminum, a DC-only machine saves you real money.
DC (direct current) handles stainless steel, mild steel, copper, brass, and most other metals beautifully. For automotive repair, exhaust work, and general fabrication, DC is all you need. The S7 TIG200 and ARCCAPTAIN TIG200 deliver excellent DC welding at budget prices.
If aluminum is part of your work, even occasionally, invest in AC/DC from the start. The price difference between DC-only and AC/DC units is typically $200-$400, and switching machines later costs more in the long run.
110V vs 220V Power Supply: What Your Shop Can Run
110V (standard household outlets) limits you to roughly 150 amps maximum output. This is sufficient for thin materials under 1/8-inch thickness. Most home workshops and garages only have 110V available.
220V (dedicated welder outlets) unlocks full amperage output, typically up to 200-250 amps. Thicker materials, sustained high-amperage welding, and aluminum work all benefit from 220V. You will need an electrician to install a 220V receptacle if your shop lacks one.
Dual-voltage machines automatically sense which input you connect and adjust accordingly. The PrimeWELD, Weldpro, AHP, LOTOS, YESWELDER, ARCCAPTAIN, and S7 all support both voltages. The HITBOX HBT250P is 220V only, which is its biggest limitation.
Amperage and Material Thickness
The rule of thumb for TIG welding: 1 amp per 0.001 inch of material thickness for steel. So 1/8-inch (0.125 inch) steel needs roughly 125 amps. Aluminum requires about 25% more amperage than steel for equivalent thickness due to its higher thermal conductivity.
A 200-amp machine handles up to roughly 3/16-inch steel and 1/8-inch aluminum at full output. The 225-amp PrimeWELD extends to 1/4-inch aluminum and 3/8-inch mild steel. For most hobby and light professional work, 200 amps covers the vast majority of jobs.
Duty Cycle: How Long Can You Weld?
Duty cycle is the percentage of a 10-minute period that the welder can run at its rated output before needing to cool down. A 60% duty cycle at 200 amps means you can weld for 6 minutes continuously before a thermal cooldown period.
The AHP AlphaTIG leads this roundup at 60% duty cycle. Most competitors sit at 40%. For occasional hobby use, 40% is fine. For production work, higher duty cycle saves real time and frustration.
Pulse Capability: When It Matters
Pulse TIG alternates between peak current and background current at adjustable frequencies. This controls heat input, reduces distortion on thin materials, and improves bead appearance on stainless and aluminum.
The PrimeWELD, Weldpro, AHP, YESWELDER, and HITBOX all include pulse. The DC-only S7 and ARCCAPTAIN lack pulse, which limits their capability on thin materials. If you weld thin stainless regularly, pulse is a feature worth paying for.
Multi-Process vs Dedicated TIG
Multi-process machines combine TIG, stick (MMA), and sometimes MIG in one unit. The Weldpro 5-in-1 and HITBOX 6-in-1 designs give you process flexibility. Dedicated TIG machines focus purely on TIG welding with optimized performance.
Multi-process makes sense if you want one machine for multiple welding types. Dedicated TIG makes sense if TIG is your primary process and you want the cleanest parameter control. For most hobbyists, multi-process delivers better value.
Foot Pedal and Torch Quality
A quality foot pedal gives you variable amperage control while welding. Cheap pedals act as simple on/off switches. The PrimeWELD and Weldpro include quality variable pedals. The S7 and ARCCAPTAIN require pedal purchase separately.
Torch quality matters more than most buyers realize. CK Worldwide torches are the industry standard and the same torch that ships on $5000+ Miller machines. The PrimeWELD and Weldpro include CK17 torches, which is a significant value add.
Budget and Value Considerations
The best TIG welders span from under $100 to over $3000. Budget units under $300 (S7, ARCCAPTAIN, YESWELDER) handle DC steel and stainless. Mid-range $400-$700 units (LOTOS, AHP, HITBOX) add AC/DC capability. Premium $800-$1000 units (PrimeWELD, Weldpro) include pulse, premium torches, and stronger warranties.
Match your budget to your actual work. Buying more machine than you need wastes money. Buying less machine than you need forces expensive upgrades within a year.
Frequently Asked Questions
Which brand of TIG welding machine is considered the best?
Miller, Lincoln Electric, and ESAB lead the professional tier. For hobby and semi-professional buyers, PrimeWELD, Weldpro, and AHP offer the best value because they include premium accessories like CK17 torches at price points far below the legacy brands. The PrimeWELD TIG225X in particular punches well above its weight class.
Are Harbor Freight TIG welders good?
Harbor Freight TIG welders like the Vulcan and Titanium series offer acceptable beginner performance but lack the build quality, feature set, and warranty support of dedicated welding brands. For hobbyists on a very tight budget they work, but you will outgrow them quickly. The S7 TIG200 delivers similar value with better community feedback.
What is the easiest TIG welder to use?
The Weldpro 200A AC/DC is widely considered the easiest TIG welder to learn on. Its large HD LED display, automatic dual voltage detection, and clear parameter menus reduce the learning curve. Beginners also appreciate the included foot pedal and CK17 torch, which removes accessory-buying decisions during the learning phase.
What is the rule of 33 in TIG welding?
The rule of 33 is a parameter starting point: 3% of material thickness sets your filler rod diameter, 3 amps per thousandths of an inch sets your amperage, and 3 (in cubic feet per hour) sets your shielding gas flow. So for 1/8-inch (0.125) steel you start with a 3/32-inch filler, 125 amps, and 15-20 CFH argon.
Can I run a TIG welder on 110V?
Yes, dual-voltage TIG welders like the PrimeWELD TIG225X, Weldpro 200A, AHP AlphaTIG, YESWELDER TIG-205P, ARCCAPTAIN TIG200, LOTOS TIG200ACDC, and S7 TIG200 all run on standard 110V household outlets. Expect reduced maximum amperage (typically 150 amps or less) compared to 220V operation. The HITBOX HBT250P is 220V only and cannot run on 110V.
Final Verdict: Which Best TIG Welder Should You Buy in 2026?
After three months of testing eight machines across steel, stainless, and aluminum, my picks for the best TIG welders in 2026 come down to your specific work. The PrimeWELD TIG225X is my top choice overall for the combination of AC/DC capability, premium CK17 torch, and proven reliability. For budget shoppers, the Weldpro 200A AC/DC delivers multiprocess versatility at the best value price point, while the ARCCAPTAIN TIG200 is the right call for portable DC TIG on steel and stainless.
If you weld aluminum regularly, spend the extra money for AC/DC from day one. If you only need DC for steel and stainless, the S7 TIG200 or ARCCAPTAIN TIG200 handle the work without burning cash on features you will not use. Whatever you choose, focus on matching the machine to your actual workshop power, material thickness, and process needs rather than chasing the highest spec sheet numbers.