I am on the look out for a Mig to do some welding on car bodies. I am also needing it for welding some roll cage tubing which will be about 3mm thick. Which welder will be best? I was going to go for a SIP 150 but they dont seem to have a good rep on this forum! Is the Clarke a better option or do you recommend something else? What do i need to look out for when buying as probably going 2nd hand. Is there anything i need to look out for with regards to what should be with the machine with regards to torches, regulators etc. Any info would be greatly appreciated.