Looking for a thermostat with remote sensor(s)

It may be a long shot that anyone here has something like this, but I am looking for a thermostat with 2 primary features:
1 - an android app so I can control it & program remotely (currently have a honeywell wifi thermostat and don't want to lose that functionality)
2 - I need a thermostat that can get the temperature from a location other than where my thermostat is wired.

In my bonus room, the thermostat is located on an exterior knee wall. The heat behind the wall is giving me false temp readings. There isn't another wall that it could have been mounted on. I could place a wireless thermostat on a shelf to get an accurate temp in the room. Programming the thermostat to operate at higher levels doesn't really work b/c in the morning or at night 80 degrees on the thermostat is close to actually 80 degrees in the room. However, at 4 pm, 80 on the thermostat might be 67 in the room.

I see ecobee and venstar has similar products but I have no experience with them. I tried calling honeywell, but I couldn't understand a word the customer service rep was trying to say. She gave me model numbers, but it doesn't look like they are compatible with my current thermostats.

edit: After reading a little more on the Ecobee3, it looks promising. The review on Tom's Hardware seems to give it a slight edge over the Nest mostly b/c of the remote sensors. LINK