What home thermostat do you have?

After the Sally flood, we replaced both systems in our house with Carrier Infinity 18 SEER units and the fancy, dancy thermostats that came with them seem to be awesome. My wife loves it. I'm just along for the ride of extra blankets at night, but it does alert the vendor if it's working poorly. It tells you when to change the filter and our power bills have dropped dramatically.

It's wifi enabled and can be controlled from anywhere from what I'm told.

The only drawback is when it's really cold I have a hard time figuring out how to turn the air up from 70 to 73 or so.