Savant’s SST-W100 is solid, the new CLI-8000 is good as long as your using external temp sensors. Lutron RA2 thermostats are solid. Select Aprilaire units work very good, based on other dealers. Nest and Ecobee are both a no go with Savant. Z-Wave units through Vera work good as long as your mesh network is built correctly and signals are adequate.