One of the things I'm still interested in is Zoning, especially with the layout of our house, there are benefits to being able to reduce the airflow to the bedrooms while running the living areas at a warmer level.

The Airtouch 4 system seems to be the best option available and looks to be a much better option than any of the stock options available.

Has anyone had experience with the Airtouch devices? I understand it can also be added later if required.