I was originally enquiring about a much more expensive unit and was sold onto this one. It has been flawless, has welded plenty of aluminum now on full amps with a wee 2.4mm electrode without missing a beat. Its Arc welding is also smooth and I have had no issues with the VRD interrupting my weld.
The only small issue I had was working out the stacking of the two units, I even read the instructions.
Ben Lee