Does anyone have an opinion, or better yet, facts, on the performance differences between one PB12-Ultra/2 and two Axiom EP500's??? My HT room is about 3300^ft and the back of the room is open to another 2000^ft. It is in the basement (padded carpet over concrete). If I went with 2 Axioms, one would be in the corner, the other would be approximately 5 ft from the opposite corner (if that makes any predictable difference). Conversely, if I put the SVS in the corner, it will have to lay on its side. Two EP's will definitely look better, but once the lights go out no one will care. My #1 goal is to *feel* the bass. I want to be kicked... hard! And I want subs that go *deep* as well. I don't want to miss out on any LFE's once my HT is up and running. Either brand will be a big upgrade for me, so I'm not worried about sound quality. Any thoughts?