Georgia the MBE is an excellent air handler in my opinion much better option than the AEPT. I just like two components over one component. You will also get the CAP or CHAP coil with this set up.
Robin I believe was saying higher SEER is better for you and that would be the RTG. This is an excellent I have sold many RSG's we don't do many heat pumps here.
As far as the proper t'stat go for the two-stage heat and cool with humidity control. It as Dash says a White Rodgers with an Amana tag. It will provide greatly improved humidity control and for the heat pump can be set up to help eliminate window condensation during heating season. One really nice feature is you can program it to run the fan continuously for better filtration efficiency and to combat stratified air. With the humidity control feature it will turn the fan off if humidity rises to set point and after next system function bring the fan back on.
You have made an excellent choice of equipment hope your contractor is competent and brings it all together.
I would also like to express thanks to all except airworks for being informative and balanced in their responses to this inquiry.
[Edited by classical on 11-09-2005 at 07:30 PM]