Best Smart Thermostats Featured in This Roundup: Ecobee4 Review. MSRP: $249.00. Nest Learning Thermostat (3rd Generation) Review. Lux/Geo Wi-Fi Thermostat Review. Lux Kono Smart Thermostat Review. Nest Thermostat E Review. Bosch Connected Control BCC100 Thermostat Review.Honeywell Lyric T5 Wi-Fi Thermostat Review.Looking to keep your home cozy and still save money? A smart thermostat might be the gadget for you. Check out CNET's favorites. Smart thermostat buying guide · Ecobee4 Smart Thermostat · Lux TX500U review. Here's a list of smart thermostats we've tested recently: Emerson Sensi Touch. Honeywell Lyric. Honeywell Lyric T5. Johnson Controls GLAS. Lux Geo. Lux Kono. Nest Learning Thermostat. Nest Thermostat E.