I had a Diva (DVCL-153PR) connected to seven (7) Ensenior recessed LED lights (9W each). It worked great and was dead silent. I saw the Sunnata (STCL-153PR) at a local store with the less 'clicky' switch and switched over to that. The Sunnata controls the lights fine but the switch itself makes a high pitch buzzing noise especially if the lights are at anything but full brightness.
I'm wondering if I just got a bad dimmer or if this is common to this model.