Welders, ( I leave myself out of that category as I am only a hobbyist) I went and looked at the Diversion 180 today. Played with the thing and it seemed simply enough. The price is right and I want opinions on the TIG ability. I can see welding Stainless Steel and iron, but I am not sure I would ever weld aluminum. Would I be better off saving my money and buying a Dynasty, or is there a better machine?