I was wondering if people had suggestions on floor standing speakers for a large space, a great room ~30' x 50'. The primary living/listening area will be ~ 30' X 30'. I will be using a McIntosh C2300 with a MC452 to drive the speakers. My price range is 5,000 to 8,000. They do not have to be new speakers. I am trying to line up 2 or 3 models for a listen and need help narrowing down the field. Thanks in advance!