I've got my money on the 255! Perhaps it will take a little pre-heating. The point is that the 255 EXT is More machine than most guys, or companies even, will ever need. My local fab shop owner dropped his jaw, and two of his welders just stared at the 3/4" T-joint in awe. He wants one, and they run on single phase power.
Here we can get in the game without another mortgage payment, or buying the power company another wind turbine.
This is the machine for us mortals.