The build quality of this littler welder is fantastic. I had an easier time burning rods on this ESAB than I do at work with the big Miller's and Lincolns. The Hot Start and Arc Force are easily adjustable, creating a nice easy start, holding a tight arc and prevented me from sticking rods!It also is very efficient and the amperage is very accurate. Maybe 90-95% ...that is one of the biggest pros to this machine.The only con I have is that I wish it came with a case. Oh well, they sell it separately, so that'll be my next purchase!Love this ESAB!