We love our Nest.
We have wanted one of these since they came out, and with the purchase of our new house, we thought it was the perfect time to finally buy one.
We bought a copper Nest and it's so beautiful and eye catching. It's cool that when you walk by, it senses you and the screen flicks on and tells you the temperature.
Our Nest was very easy to install and took less than half an hour. We have already noticed it paying itself off. You are also so much more mindful of how much you use the heat in your house. You can adjust the Nest with your phone when you are not home (or if you're simply too lazy to move from bed but it's getting too hot in the house! Lol!)
It learns and adjusts to you and can set temperatures for the night and for when you're away at work.
This is one of the best purchases we've made! We definitely recommend it. It is worth the price because it will pay itself off.