Oh no... Not another king of the welder question... Well now that Im a little wiser and learned, I would flip a quarter between a Lincoln Power Wave 355m with a PF 10 or whatever they call it or a Lincoln v350 adv. proc. with an ln10 and all the stick and tig goodies. Maybe Ill hit the lottery one day and pick up one of these.. heh.
And yes Id go bigger, but weve only got single phase and 50 amps to work with. We could still run these, but not wide open..
Now if 50 amps is all we have, then Id say a thermal arc arcmaster 300TS (I think thats the ac tig version).. Its pretty derated on single phase, but you can still get 250 amps out of it..
At that limitation on the amps, you almost have to get a seperate mig and plug one or the other in when in use. Thats what Ive been doing.
Oh, and the miller doesnt do ac tig. Neither do these lincolns. Thats the next thing well probably see. A multiprocess that does AC tig And all the other stuff.