I got my SVS 25-31PC-Plus yesterday and hooked it up. I can say without a doubt that my pants did not flap and all of my dental work is safely in place.

I didn't have time to really do any configuration at all so I am not even close to passing judgement. I also have a new receiver so I may not have something in the receiver set properly. It does go deeper than my old sub. No doubt about that. I will have a couple of hours tonight before my wife gets home to configure it so hopefully I will get it figured out.