I bought 3 of these as a means to uplight scenery for a live show last year. They proved equally adept as floor-level uplighter and rear stage backlighting effects. Nice colour mixing, good choice of palette, and fairly reactive, even response to DMX, even when dimming.
One unit failed in the green channel 6 months or so in, and as usual, Thomann's repair service was second to none. Fast, informative and quibble-free.
A criticism of the build might be the flimsy plastic ends, which had a tendency to crack with repeated twisting of the end-bracket tie-downs. However, I suppose that is the price paid for a cheap unit that otherwise does just what it says.