My room is open and is:

20x14x9

It will be used for 80% HT and 20% Music. I usually listened at 70-85db 90% of the time and the other 10% is around 100+dbs.

I was actually wondering what a difference I would hear (ie. crisper, more detailed, louder, better sounding, etc).

Receiver: Yamaha RX-V2200
Main: Axiom m80
CC: Axiom VP150
Surround: Axiom QS8
Sub: SVS PC13-Ultra