What are you welding with?

I have an inexpensive no-name multi-process machine (arc/DC TIG/plasma cutter) but the only feature I've actually used is the plasma cutter. That works surprisingly well for a $382-to-my-door unit (Amazon sent me a $150 "coupon" in the middle of a Lightning Deal and I got both discounts). It came with all the TIG stuff except a foot pedal, which I want before jumping into it. If I got any good at it, I'd look into a proper AC TIG machine and go back to just cuttin' plasma with the Amazon special.