I've been the only user since 2011. Works great except two of the silver knobs sometimes respond slowly, sometimes they are fine. Seems to depend on the weather. I most notice it when trying to adjust window aspect, so sometimes I have to spin the knob a lot. Some days the knobs are fine. I don't know what the deal is with that. Everything else works great, the trackballs are the main reason to use a panel anyway and they work great. Combine this with an X-Keys macro keyboard and you have a decent budget color control setup.

I'm no longer coloring at home otherwise I'd still be using it.