I currently have 12 for my scene and outside it for 3 years now, this product is simply stunning!
The brightness is excellent, colors are particularly saturated, only the color mixing is not great, the only interesting is the turquoise and magenta (channel 1 and 2 funds (512) produces a UV filter sympathetic).
His only default is the angle of illumination that is not variable and changing colors is seeing.
I advise as to price 290euros public is an excellent deal!