You sorta got to ask yourself a question as to what you are going to use a TIG for? The Econotig is a low end AC/DC machine and is limited in its capabilities. If you do want it for aluminum welding, you will be limited to thin materials only because of the Econotig's max current ratings. Like wise for mild steel welding. For the amount you will be spending on the Econotig, you could find a better used machine. I made the same decision and ended up with a Syncrowave 180 and I am happy with the choice. Oh, by the way Miller will probably be phasing out the Econotig with a new model soon which will have more beans.