[jetblue69]

Depends on what you want to do. A Mig is very usable for just about anyone and is good for most automotive jobs. A 115V is fine for steel and you'll need a 220/240 for aluminum as aluminum requires more power for welding. Tig is mostly for precise welding and for welding exotic metals. I have a Hobart 140 Mig, runs on 115V and makes gorgeous welds with no splattering at all as long as you use an inert gas with it. Mine came with the valves and I bought an Argon/CO2 bottle (the big one) on Craigslist for $150.