Hello all.. Ok a little history on what i have now. I bought a Lincoln Pro Mig 135 wire feed welder a few years ago. It has been a very good welder to me and I love it. Haven't run anything but .035 flux core through it.... According to the Lincoln site I can weld up to 3/16" in a single pass(flux) and up to 5/16" multi-pass. And single pass Mig to 3/16".... LINK I've been thinking about purchasing a 230v welder in the future(maybe by summer if all goes well). Since I really like my other Lincoln, I've been thinking about going with the Pro Mig 175.. It can definately weld thicker material using flux core. Up to 1/4" single pass flux or 5/16" multi-pass with .035 or up to 1/2" mulitpass with .045 NR-212 flux core. LINK What gets me is if you compare the two using the Mig process, they weld the same. Up to 3/16" single pass using .035 flux... Only reason I would step up to a different/larger welder is to weld thicker material with gas for a cleaner weld... So judging by what I wrote here, is the 175 a waste of money? Should I just stick with the 120v 135? Or step up int he future. They always say bigger is better, but according to the fact sheest it doesn't look that way... Is the extra 40 amp and the 230v juice of the 175 worth it? Just looking for opinions.. I know some will say go Miller or go with a model sold by a welder supply store for more $$. But comparing the retail version to the wholesale version, I dont see any difference in performance(judging by the thickness charts)... Only difference I can see is more adjustability.... And so far with my Pro Mig 135, I've been happy... Thanks!