So, It's been months since I have posted. Hubby and I are finally ready to make the purchase to get our new set of axioms. SO now I'm wondering if we should get the EP 500 or 600. We are for sure getting the m80's. Our room is about 15x25 with 8ft sloping to 10 ft ceilings. Any thoughts? We bought the Denon 4306 so far. Any thoughts or suggestions appreciated