I'm still confused. Why wouldn't you want to use the same monitors as the mastering engineer? Sure, the room will make a huge difference, but I have spent my career in mastering environments, and the most common monitor is Genelec. These are in rooms designed by acousticians, any they are amazing.

The same applies to other things like, cable, DAC's, displays, etc. If Belden 9451 cable is what the engineer mixed on, why would you want something like monster cable? I think many of the passive speakers and amps used in the consumer market are the equivalent of monster cable.