I am pricing new tower speakers, and am debating over the boston vr-950 vs. the 970....the main diffence between the two (other than price!) is the built in powered sub on the 970's. I don't currently have a sub and would be willing to spend the extra on the 970's if I could do without. My room is roughly 14x11 and I live upstairs in a two family apartment. My thinking is if I could get away with the subs in the 970s I might not piss off those downstairs. If a separate sub is a must, I would go with the 950s and use the extra cash on a separate sub...any ideas?