I was on the fence for about a year on getting one of these and then funally pulled the trigger last black friday when they were $149 at Lowes. Even if it's doing the same thing as my previous thermostat, I love the "geek" factor that goes with these.
For instance - last night I was sitting at work in the middle of the night and I know my little ones have been coming down with a cold or something. I remembered that I had turned off the AC/HEAT since the weather has been nice, but at night it gets a little chilly. So I logged on my phone and turned the heat on because I didn't like the temp the house was at. All done while my family was sleeping and remotely.