Pg95xat installation manual

I am having a new gas funace installed and understand that Carrier, Bryant and Payne are really all the same. Is this true? Part numbers are exactly the same etc. What is the Bryant model equivelant to Payne PG9UAA and PG95XAT. What should the price difference be between Payne and Bryant? PAYNE Furnace/Heater, Gas Manual PAYNE Furnace/Heater, Gas Owner's Manual, PAYNE Furnace/Heater, Gas installation guides Download the manual Infinity 96 gas furnaces (59TN6) provide variable-speed blower comfort and efficiency, with intelligent infinity control technology.