I recently had a local HVAC contractor install a new 15 SEER 2.5 ton system in my home. After doing so, I discovered that my power company will give me a rebate of 50% up to $100 if I have a new programmable thermostat installed. I have been trying to do some research to decide what thermostat to have installed. I like the idea of one that has wifi and can be remotely controlled using my smartphone (I use a Blackberry if that makes a difference) but I'm not sure if that is truly worth the money. What programmable (needs to be a 7 day programmable) thermostat would you experts recommend?