Yeah, guys, it ain't no big deal. 99% of what I weld is stainless, and 99% of that is 304. Like this, for example:
You can weld stainless with either mixed gas (argon and some CO2) or with straight argon. I use straight argon because when you want to weld aluminum (about 0.4% of what I weld), then you need straight argon. I don't do a lot of aluminum, but when I need to, it comes in real handy. Like, for example, the shifter lockout on my Esprit. The English, in their engineering magnificence, put a little plastic button over a bolt and had that rides up against the an aluminum block for the reverse lockout. The button, of course, disintegrates and the bolt head gouges out the aluminum block. So, I changed out my wire to my aluminum wire spool (available anywhere welding supplies are sold), set everything on high and cranked up the wire speed and filled in the gouge, then ground it back down smooth. Worked fine. Broke an aluminum bottle opener, our only bottle opener besides my pocket knife. Apparently the 3 lb sledge hammer was a bit much for the fine tuning I was attempting. Anyway, clamped it back together, hit it with the MIG set up for aluminum, fixed good as new. Better, actually, because it now opens bottles again.
Anyway, I suggest splurging the extra fifty bucks or whatever and getting the HF welder that can do gas or flux core wire. It is well worth it. Unless all you ever want to run is flux core on carbon steel.
Oh, when I broke down in S.D., limped in to Pierre and took my bike apart, shown here, behind the motel:
the cause was eventually determined to be a shattered crossover tube, the exhaust pipe tube that comes out of #2 cylinder. The dealer didn't have one, of course, as they are now unobtainium, but let me use his Hobart Handler MIG on what I had. That was the worst, ugliest welding I have ever done, and that's saying something, but it held up just fine and got me home. As I said, that Hobart Handler had nothing on my HF Italian made MIG.