Tried an EWM 220amp 220v inverter tig today. Has very impressed indeed, and have heard a local marine engineering company is using one 8 hours a day, in a production capacity.
Its very very easy to program and store up to seven different weld schedules, and these can also be changed easily if need be.
The only drawback is the price (£UK3000). Wonder if anyone else using this forum has any experience of EWM equipment..................seems very good to me!