so i'm most likely getting a trane xr15 heat pump.

The Outdoor Unit Model # is 4TWR5048E1 and the Air Handler Unit Model # is 4TEE3F65B1

Is the quoted thermostat TCONT802 a good fit or is there something that will utilize the equipment better? i know the TCONT803 has the humidity control? but what are the benefits of a better thermostat?

thanks!