I have a friend that works with me in car audio. He is about to buy a full boston VR system... VR2's, VRC, and VRX's. He is trying to decide between a 25-31PCI and a Boston PV900. I know Im not suppossed to say this but the SVS would be about $200 more. He doesnt really want to spend it. We are going to Ron's on wednesday to listen to a BP1-ISD. So I think that should do it. Is there anything I can show him online. Im gonna have him read a review or two. Basically what I want is input from anyone with an SVS to tell him what to do. He has heard and FELT my 20-39PC+ he loves it. But he isnt sure if he wants to spend the extra money.