I just commissioned a 40 device caseta system with 3 of these. Found that if there was nothing paused then hitting play didnt do anything. I also couldnt get it to reliably pull a favorite playlist. Volume worked fine. I went ahead and programmed the center button to tell control4 to select the pre-programmed favorite.
Its nice to have a hard point of control for sonos but im not sure its really worth it to have.
The Bitterness of Poor Quality is Remembered Long after the Sweetness of Price is Forgotten! - Benjamin Franklin