I haven't used my mig in probably 10 years because being a cheap one I bought 25 years ago it is always problematic and I can't be bothered messing with it each time I want to use it. Luckily I scored a bottle years ago and got it filled the last time I used it so bottle is still full. Doing bodywork on cars mig is the only option and I have only tried gasless mig once and didn't bother with it after 5 mins so wouldn't bother with it. Arc does everything I need ( I have oxy but only use it for brazing and that isn't too often ) but then with the arc I have been using that since the mid sixties so I have had a lot of experience with it. A small arc doesn't cost much and it just takes practice to get a feel as to how far you can push it without blowing holes in things. One problem with trying to lean how to use it is that in many cases, such as repairing mowers you are trying to repair thin tube or sheetmetal and that does require a fair bit of practice
