Get a Hobart 135 or Lincoln 110.
The Hobart can be had off E-bay for about $299-$325 (without bottle but with regulator or sometimes with and empty bottle) I've used Hobart and I like how well they work. Some people like them and some people don't. MOst that don't, like the Lincoln
The Lincoln sells for a little bit more but has a better gun (Tweeko) Lincoln also produces a 'retail' version they put into stores like Home Depot, as starter kits. I think the starter kit for the 110 welder is 'Lincoln 3500' and comes with a basic mask, empty bottle, basic cart, wire, and regulator. Believe it or not, ithe 3500 is about the same price as the on-line (E-Bay) Lincoln only units (non-starter kit) at $300-350 plus if you score it locally, it's a far sight easier to warranty the sucker if ever need be. I've used a lincoln 110 but with the flux core wire and hated it every day. However, the ol man and I want on a welder hunt because his MigPak 250 seems to cook sheetmetal even with a spot stitcher. Every where we went and all those we talked to gave Lincoln the highest review. My dad ended up buying the Lincoln 3500 from Home Depot being as it was the best bang for the buck, so I'll have to give it a whirl with gas shielding.
Stay away from 'Flux core only' wire feed welders. They are not any good for sheet metal work but they do work decently for larger gauge steel.
I don't know if I'd get a Miller. I used one and got mixed feelings of it plus I've heard alot of neutral things about the newer Millers from other companies and other users. BTW- Craftsman welders are Millers. (at least the last four model years were) The one I used was flux core only as well. Hated it, but it did better than the damn Lincoln. So IMO the Miller wasn't SO bad. But it did go to the lowest amperage in comparison to all three. I think it was a 90 amp and also able to be easily converted to a makeshift Tig welder. (provided you get the right stuff for weling aluminum)
Hope this helps you out.
