I use it for 2 years.
I like the quick and direct control functions. I have not had time to put myself in DMX512 and I admit that just ordering four projectors with an XLR cable (instead of four extension cords as the good old days) brings a lot in terms of assembly time and aesthetics.
I like less quality knobs that makes a little "cheap" but for what it will do so fully. Auncun trouble with.
Before buying it I had a small board with 4 channels 4 PAR56 and extension cords.
The value for money is very satisfactory.