Bumping this thread (two years later!) because there are Black Friday sales (Amazon and other retailers) on the Ecobee thermostats. Ecobee Premium is currently $250, and the "enhanced" is $190. Those are pretty decent prices and are lower than normal.
I picked up the Ecobee Premium last week and I am enjoying it so far. I went from a "dumb" 7-day programmable Honeywell that did the job just fine, but I wanted a bit more control and insight. For anyone that uses Ecobee, I strongly recommend using the "Beestat" site (
https://app.beestat.io/) for additional statistics and a better web UI than the stock Ecobee site.