thanks for the input guys, lots to think about. If anyone has heard or gets a chance to hear twin EP 500's in a simalair setup let me know how they sound. I love deep bone crunching bass in a theater and just assumed the 600 would be better because they go Sooo Low did'nt think a 500 could keep up even though they have impressive stats as well. Two 600's are starting to get out of my price range and they take up alot of room.