Strange. Definitely haven't had any of the lag issues or random on/off issues. Bummer.
The dimming could be two things:
1) The high/low trim may need to be adjusted, which is IMO way way easier on Lutron than others.
2) If you have LED bulbs, the brand makes a huge huge difference. FWIW I found that Parmida LED retrofit kits are the best, by far. No buzzing and dims down to 1% (most are 10%).
As for the buttons, I agree actually. That's the one thing I like about some of my zwave switches. BUT, even better than both are the Lutron Maestro buttons, which you can get for ~$125 if you go with RA2 Select (vs Caseta). They are really nice.
* the switch itself feels very flimsy and low quality.
* dimming only sort of works.
* the control is extremely laggy. Hit the buttons and wait up to a second before something happens.
* sometimes, the lights just don’t turn on. I’ll watch the LEDs on the switch light up, and then turn off. And then try again. And fail again...
I’ve had it a week and I’m ready to throw it out a window.