Hello,
It worked fine for quite some time. I had a few issues, but nothing too serious. I have been using Qu-16 as a radio mixer; linked to a max patch; controlling audio players and mix automation for auto start and fader sync. It took me some time to figure out the MIDI controllers, but the audio was very easy.
All together, once you understand the mixer's ergonomy, especially the routing, which is a little odd, it is great. In any case, so much better than any DIGI factory crap interfaces I have used before.