I have really enjoyed the Revel B12 sub(s) in my own system. They are priced right at $995.00, look great (even if it IS only vinyl over mdf), and have the flexibilty of the graphic eq onboard. Maybe not the deepest sub, but the bass you get will be pitch accurate, tight, and fast.
subwoofer recommendations $1000
Want clean bass extension to fill out kestral 2 spkrs. driven by tube amp... mostly jazz and classical tastes. Want musical tight sub as hm thtre use is not needed. k2'S only need help below 40 HZ. used is O.K. too.