Thanks to both John K and magicman for the quick advice! One specific question: How important to the "Axiom sound" is the sub. For example, if I held on to my Paradigm DR-10, would I notice much of a difference with an Axiom Epic 60 or 80 system without the EP 500?

Sony KDS 50A2000, Paradigm Mini-Monitors, CC-370, DR-10, Jamo E800s, Denon AVR 1802, Oppo 970