I almost purchased the ecobee3 a few weeks back, but held off due to confusion over how to wire it with my heating/cooling system. I currently have the Nest installed, but was intrigued by the use of sensors to provide more balanced heating. The unit itself looks nice and from what I've seen of the app, it too is well done. Though not confirmed, it's rumored they'll support Apple's Homekit. They are also prominently featured in the Apple Store. They had a deal where you could get 3 sensors and the thermostat for $250. I'm typically ok with basic electrical, but found the wiring to be confusing on the ecobee3. It doesn't appear as if I have a c-wire, so would need to use their power extender kit. Looking at my furnace and HVAC, I realized pretty quickly that I have no idea where this would get installed. At that point, I called and cancelled my order. Just curious if anyone else has ordered the ecobee3 and what their experience has been? Much of this was prompted by my Nest continuously going offline.