hi, i'm new to this forum, i've been welding a couple of years. i'm in the market for a new mig welder. a few people are telling me to go for a invertor mig welder. i've done a few searches and there seems to be loads, different make etc. what i need to now is which are the good makes and the bad ones. i'm looking to spend around £650 on one. so i don't want to get burnt buying the wrong one. look forward to hearing your advice. tim