I'm looking at getting a new sub. Large room, want rich but not pounding sound. Current setup: Receiver: VX-571 Front: Polk Monitor 30 Center Polk CS1 Surround: Sony B1000 Sub: Sony Generic HTIB I think the best upgrade right now is the old sub. I can only fit about 14-14.5" width though Here is what I am looking at Velodyne VX-11 ($150) Velodyne Starfire 10 (used) ML Dynamo 300 ($130) JBL ES150p ($160) Mordaunt Short Carnival 9 ($170) What does everyone think? Thanks!