I know. Very intriguing. I want one. I hear they are a little pickier about starting with a clean surface, but I am already very meticulous about that. I actually put up a 8 foot by 10 foot galvanized wall at my welding setup so the weld spatter wouldnt be messing up the walls. I use Argon/C02. I cant imagine what MIG with flux core wire would do, but I have seen the end result. The gas IS a different mix between MIG and TIG right? I want to do stainless, alum, and mild steel but changing over takes so much time AND money since each alloy requires a different setup.