A low-end SVS will knock knick-knacks off your shelves and beat pretty much any sub priced up to $2000. A high-end SVS will....well, your house is well constructed, right? I have a mid-range SV, I try not to let it play 20Hz or lower at over 100db since parts of my house start rattling.

Or if you don't care about the money, try something with this driver....[Link: adireaudio.com]