[cmicali]

I haven't directly noticed any savings (although I haven't payed much attention,) but the design, remote access, and general pleasantness of it are well worth it.

They have clearly paid a lot of attention to even the smallest details and if you like that kind of thing, a Nest Thermostat will make you very, very happy.

[jack-r-abbit]

I like the monthly report too. Being able to adjust both the Nests from the comfort of my couch via the phone app is also a nice feature.