OK - had a play. Have to say for less than 40 quid each, you really can't go wrong. In real terms, there are a moving head with an equal output (arguably more) than an ADJ Tripar. They aren't the quickest of moving heads (hey, they don't cost a grand+), they are pretty well built - they are plastic, but it steel feels quite substantial, probably more so than your average equivalent plastic par (hey, they don't cost a grand+), the DMX control is compressive and provide tilt, pan and RGB control with extended flash, sound to light features if you choose the extended channel model (they don't do anything like iris, prism etc, but hey, they don't cost a grand+)
A lot of people are going to be interested in the little remote that came with it (I didn't realise it did). Comes with things like auto mode, RGB and mix colour selection (if you don't like the fit inducing colour changing routines etc)... A nice little addition I guess.
In reality, I'm probably going to buy another 7 and make up a lightweight portal moving head truss for smaller gigs and I'll build an DMX foot controller for them.