Best Thermostat Device/Setup

Like @sanewton72 and @StephenH I use the Zen thermostat. It has a nice simple interface that my wife REALLY likes. It does not have an intrinsic scheduler function. I handle that in HE as a part of my Modes.

Here is a discussion about how you could use temperature sensors in other locations to control a Zen (or any) thermostat.

Remote sensor with Zen thermostat in Hubitat

I have used other smart thermostat that are replete with features and functions. This one is the best for us.