I have a gianttech plasma,arc,tig machine and it works great. I don't have any complaints. It doesn't weld as good as my Miller syncrowave 200 though but it does the job. It came with a warranty for 3 years and the customer service is awesome. I had a problem with my food pedal and Larry (the Gianttech guy) fixed the problem fast. I use the plasma part all the time and it has never let me down.