I am getting my daughter 4 monitor audio bronze 1's and a center channel. She is off to college and will be living in a studio apt. Needless to say, she doesn't need to be evicted for too many noise complaints. What would be a decent 8 inch sub that would add some warmth to the sound but not rattle the neighbors? I have considered Velodyne, Paradigm, Mirage, Energy....any others? And where would be a real cheap place online to get something? I keep my eye on ebay, but how about a source with a consistent inventory?