I have only put 10 hours on this machine but I use it for my business. It's run wonderfully, much quieter than the previous welders I've used, it's mounted on my service bed side and it's light enough it didn't cause any issues. Welds great with a very controllable ac that isn't too soft like my previous welder, easy arc starts and runs my 200 amp mig great. I've welded while my helper ran grinders and bandsaws off of it. I guess my only complaint is putting gas in it from a can, the filler tube is rather small so unless you can get the gas can neck into the tube inlet you've gotta pour slow.