Not much more that I can add to the above reviews, other than I own four of these units and the light output is truly awesome. The quad colour LED's include white in addition to the usual Red/Green/Blue and makes a very useful feature for softening the colour. Excellent product; not owned long enough to establish relaibility, but they look promising. Run very cool and a virtually silent fan keeps the LED chips cool.
I have used them for a variety of events from discos to funerals (yes!). They have built in control for "stand-alone" operation with a variety of programs including some sound activated ones.
They also work very well with a dmx controller. OK, some LED stuff lacks the smoothness of incandescent lamps for dimming, but these are among the best I've used.
Lighting backdrops (formerly needing 15kW of roasting hot halogen lamps plus a load of LEE filter) is now a breeze. No heavy cables, or distros, no spraying fireproofer everywhere, and more virtually any colour!
Overall a very impressive product and yes, I would love some more, but I can do an incredible amount with my 4 units!