FWIW, I recently got a deal on a nearly new Miller Econotig. $500 bux. The guy was an industrial welder and was welding on the side. The Econotig was too small for him. All the reviews I could find only fault the size, it's only 165 amps. So far, It's done what I need. I do realize that I may need to trade up if I'm doing thick aluminum, but, it welds nice! It's much better than I am!