Smart thermostats: Nest or Ecobee3

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Since we’re building a house (which will be ready in 2 months!!!) we’ve started looking into getting a nice smart thermostat. Anyone have either the Nest or Ecobee3?

We’ll have zoned heating/cooling (so we’ll need 1 for the main floor and 1 for the basement), and it would be great if the thermostats would talk to each other.

Right now our gas company (Questar) is offering a $100 rebate for up to 2 of either brand.

Nest is $250 right now, and Ecobee3 is $200 (momentarily on sale), so my total would be $300 for 2 Nests or $200 for Ecobee3’s

Any recommendations between the 2?

p.s. Amazon and Home Depot are where the Ecobee3’s are on sale.