ok guys..i got enough stuff sold this week to buy myself a new mig welder to do my roll cage with..looks like e-bay is going to be my best buy.i'm looking at the lincon 180 amp..on e-bay they have the pro180 and also the weld-pak180;;;what is the differance between these 2 welders and what one should i go with..they are averaging $475+shipping and are new in boxes..looking for some fast answers.have money and ready to buy.