I love it. Wouldnt have another machine. Fuel economy, engine longevity, and arc characteristics on all processes are great. Itll stack downhill, itll run lowhigh like spreading butter on toast. 90% of that is in he arm ofcourse :). TIG with it took some geting used to dealing with arc ends cause it likes to long arc. Here is a challenge for some of you miller techs if you are reading this: Why cant you figure out a way to put the auto crater function that you have in some of the new engine drives in the Pro 300? Where when youre ready to break your arc all you have to do is pull back slightly and the machine ramps down for you without loosing gas coverage. I tig with it in the field just about every other day and other than that I have no problem with it. If I have to do any aluminum I just throw the dynasty 200 in the tool box and head out. Ive chugged 1/4 lowhigh with it for 10 hrs a day on some jobs and never missed a beat. I do something different everyday and it will handle all I ask it to.