The hardware part is excellent, works as intended. The fader motors are barely audible (if even). Phisical buttons have a good feel, but maybe the transport controls could have been a weee bit more spaced (my fingers are quite thin, but I still need to be careful around the jogweel when I press play/stop). LCD buttons work like a charm.
I love that there's a single hardware button to switch the 8th fader between "master" and "channel 8" in under a second.
The control software (iMap) is somewhat buggy, sometimes it just "forgets" the pre-assigned DAW templates, sometimes it shows one DAW (the default, Bitwig) but the hardware shows the one I set (i.e. Nuendo). And it doesn't really show the current vs latest firmware version, it will proceed with the firmware update even if it's the same (tested, it "updated" 3 times in the same hour). But other than that, it has templates for any DAW on the market (I think).