[cobrashoch]

Flux core wire welds will also rust out faster and are weaker than gas welds, or so I've heard. Not to say that a flux core weld is totally bad though. Most of the high end body restore shops and rod shops I've dealt with will talk bad about a flux core wire weld. Sometimes I think some of those attitudes are total crap though, as they are trying to just justify the equipment/methods that they just happen to use. A flux core weld is easier to use and easier to learn when you are just starting out. Not that mig welding is all that hard in the first place.
cobrashock