Which Mig welder to buy?

Another vote for Hobart here.
I have 3 mig machines in my shop and the Hobart 210 out-welds the whole bunch.
220V is the way to go.
I keep .024" wire in the Hobart for most sheet-metal and my automotive stuff. The other machines are more for heavy welding. I've tried several different brands of mig wire as well. I've had the best performance in the Hobart with the Lincoln L-56 wire.