I am a new home owner. I have a 2500 SQF house that is not zoned. The current thermostat is located up stairs. It is not programable. I have narrowed my choices down to Honeywell or NEST. Does anyone have a prefrence on what is better and why? Installation is not an issue for me as I will have someone come out to install the honeywell. Any advice would be great. Thank you.