I write a little faster this opinion, as requested by someone. FYI, the site Thomann, there are many opinions ...
Purchased at the moment by a copy of this, to test the features. Having read reviews quite different, I wanted to make my own idea:
received this morning, using a DMX controller, no worries display 7 colors obtained through LEDS (red, green, blue) relatively powerful.
The trouble is that here I have been able to test it in conditions more severe than my desktop and then try the light. Provided it remains correct at first sight.
A rule of thumb I estimate ~ 300/400 lux at 1m for a beam angle ~ 80 °.
The building itself remains correct for this price range.