Beyond that, we're getting a little to technical for the open forums.
Good luck finding a dealer that has one in stock. I haven't even seen the pricing yet.
If your dealer is installing a modulating goodman, then he must use the comfortnet stat. From what i've heard the ctk03 combines the best of both worlds of honeywell and goodman, which includes humidification/ventilation, and a whole slew of options included in the prestige.