I have owned 3 a thermal dynamics, a hypertherm and now a miller 375. the miller is leaps and bounds ahead of the others cuts 3/8'' clean severs 5/8'' a true inverter plasma cutter runs on 110v or 220v. the biggest thing in plasma cutters is consumeables the other two I would use 8-12 tips one one project the 7 years I have owned the miller I have maybe used 18 tips at $20.00 per set up in the long run the cost of the miller is much cheaper. what ever you buy moisture is a huge enemy of plasma cutters .