The 160 STH is multivoltage and so works better from a portable standpoint. I'm sorta in the same boat you are, I'm using the 160STH as a portable repair unit, and am going to get a 200DX for a home workshop unit. I'm probably going to put a TIG torch on my Lincoln PM300 one of these days too, so I have a large DC TIG at my workbench at work. S/F....Ken M