I recenty aquired a new 2010 powermaster 256 for at home. The Fab shop I work at does mostly tradeshow exhibits under a sub contract for a company called catalyst exhibits (http://catalystexhibit.com/index.html). We build all the metal frame work which most of the booths are 99% aluminum. My work (http://themetalshopp.com/mainpage.html) has 3 CNC's, cnc strippit, cnc press brake, a turning center, cnc lathe, a mitsubishi waterjet, mitsubishi laser, and quite a few Miller TIG and MIG. From my experience my powermaster welds as good or better than all the miller tigs I have used and getting ready to put it against my co-workers lincoln precisionTIG 375.

Mike