Hello, I am debating on whether to get a SVS PB10-ISD or the PB12-ISD. As stated in the title, the room is 20x22 feet, and I'm looking to spend around $400-$600 for a good sub. I know both subs are in my price range, but is the extra $200 for the PB12 really make it a lot more noticeable than the PB10 in a room my size? I was going to go with the PB10 if it doesn't make a noticeable difference. The following are my other speakers... Center = Infinity Primus c25 Rear Surround = Infinity Primus 150 Mains = Infinity Primus 360 Receiver = Some Pioneer, most likely 1014x. Any suggestions are welcome!