Having read quite a bit on this forum regarding SVS subs, I've decided that either there are a lot of SVS employees here, or, they are simply very good subs! Having made an enquiry to SVS regarding the above mentioned models and stating the room size, Erik suggested that the PC-Ultra would be fine. I am hoping that this new sub will last many years without feeling the need to upgrade. If I do go for the PC-Ultra, does anyone think that I may regret not spending the extra on the PB12-Ultra/2 now? Steve.