I have a Mirage BPS-150 bipolar powered sub that I am perfectly happy with. Currently I am using a Yamaha HTR-5250 receiver until either Outlaw, the new Harman Kardon flagship receiver, or the new flagship Sony receiver make their appearance. Am I missing something w/ the SVS? Will it be a noticeable improvement over my current sub? Or should I don't worry, be happy w/ what I've got? If you recommend an SVS, please tell me why, instead of recommending it because you have it and you like it. I want a satisfying upgrade. Thanks.