I just bought one for my home.
Here's my thoughts.
*Pros*
Modern look, Cheapest smart thermostat, easy to use with Amazon Alexa App - "Hey Alexa, set temperature to 72"
There's 2 modes:
1. Hunches (which may be a problem Shabbos)
2. Schedules
*Cons*
While you can tell Alexa to set to any temperature you want at any given time there's not much *schedule* customization.
Limit of 4 schedules per day.
Schedule cannnot be set to a temperature.
You need to set the temperatures for 3 catagories of "Home, Away & Sleep"
And then you can set each schedule to one of "Home, Away or Sleep".
Say for example Friday night, I can only set it as "Home" (and it'll go to whatever temperature I preset for "home") but I cannot set schedule that it should be 68 degrees during that specific schedule.