Lots of good advice in here. About nine years ago, we bought a Hobart Handler 140 (110V). It's a nice little machine and we've used it a lot. It was purchased to do sheet metal repairs (quarters, rockers, patch panels) and it works very well for that. We did all the repair on both my dad's car and my brothers (two quarters, four rockers, a tail panel, five patch panels, a door skin, etc.) It has also been used for heavier stuff like modifying the crossmember for my Grand Prix. If I had it to do over again, I would have gotten a 220V machine with infinitely adjustable amperage settings but this little machine has paid for itself and still gets the job done. Also, I don't know the differences it has with the Miller machines, but it is obviously in the Miller family. The gun that came with it has Miller embossed in the handle. It was a good value.