I feel good about Trane Contractors 1 and 2. They both did load counts, checked out the duct work, and explained things to us.
Contractor 1 is a little more expensive, but can be explained by use of all the latest communicating equipment:
Trane XL20i 4-ton Communicating Heat Pump with Charge Assist
Trane 4-Ton Communicating Hyperion TAM8 Variable Speed Handler with Dehumidification
Series 8 3-Stage Auxiliary Heater
Trane 900 Programmable Communicating Thermostat with Continuous Comfort R.
Contractor 2 wants to use non-communicating set-up:
Trane XL20i Heat Pump 4TWZ0048A1000A
Trane Air Handler: TAM7AOC48H415A
Contractor 1 says, "Why have all the communicating ability and strip it of its ability? We are using TAM8, which is brand spanking new, so there is not much info on it on the net" (they are right).
Contractor 2 does seem to recommend parts that don't live up to the abilities of the XL20i unit. I cannot even find info on TCONT803. It appears to be a 5 year old thermostat.
Interested in feedback concerning the dressing down of the communicating ability of the XL20i.