Anything Miller or Lincoln-220.

Thing I have experienced is a gap when buying a high end 110 and a low end 220.The high end 110 is very good at thin stuff.Even the low end 220 really doesn't do well on the thin stuff and is limited in duty cycle.Then the next price level of 220 has a better duty cycle,but you end up getting features you would never use.

I had the good fortune to use a rolling chest very expensive welder named "L-Tec" and that thing would do it all.I welded a sub frame in a Monza Town coupe.You would select the wire speed,heat range and most important could fine dial in the heat.It would weld very heavy with good penetration and the next pass you could weld 22 gauge no problem just changing the settings.Loved it and regret when my friend put it up for sale,I let it slip threw my fingers.