PSEG has a sale going on right now stackable with instant rebates for most of the smart thermostats. Limit 2.
Google Nest Learning Thermostat - $99
ecobee SmartThermostat With Voice Control - $99
ecobee3 Lite Wi-Fi Thermostat - $39
Honeywell Home T9 Wi-Fi Smart Thermostat with Sensor - $69.99
Update: This is for PSEG NJ customers only.