Im after buying a mig welder, i normally just use my dads work one, but its a big old 1 and its a pain to et to and from his factory, the gas bottle's 5-foot high!!

Any how, just want a small-ish one that can be tucked away in the garage, but not really sure what to get?

Any advice would be helpful, it will mainly be use for welding cars and thin metal?!

What amp's, votts sould i be looking for etc?!

Must be gas one tho!!