Just my 2 cents worth. I have all the styles of welders, gas, arc, mig, and tig. when I bought my mig outfit, I consulted with the welding instructor where I work as an automotive instructor. He advised me to buy a Lincoln Sp135plus unit. The reason being that it is light, easy to use AND Home Depot, Lowes, and other stores carry the consumables which is a big plus for me as a dedicated fool that almost always run out on a weekend when no welding supply houses are open. The real reason he liked that unit was that he has 4 or 5 units that the inmate students he teaches use every day and so far NOBODY has been able to hurt one. That's amazing when you see what trouble some of theses guys can cause either by accident (They don't call it dope for nothing) or on purpose! I have welded many thickness' of metal and plug it into the nearest 110 outlet. Of all the units I own, this one is the most handy. Yes sometimes, on thicker stock, it is necessary to make multiple passes. When I want go get fancy or weld aluminum I break out my Miller tig, otherwise I use the snot out of that little Lincoln all the time. Bottom line I guess is it is easy to use versatile and even career dunderhead criminals can't hurt it!
