Best Subwoofer for B&W 805s Speakers


As many might know the B&W 805s speakers lack bass and I am trying to find a subwoofer under $1000 that would integrate well these speakers. I've been doing a lot of research on the web and there are too many choices out there (SVS, HSU, AV123, EPIK...) and I can't seem to decide. This is srictly for a 2 channel stereo system so no HT. My Equipment is all Rotel. Any suggestions? Thanks.
fast_944t
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I've been using a Velodyne DD-10 with my 805's for
a couple of years now. I'm pretty happy with it and
the built in room correction software is nice to have.
I think the 805's have great bass. Very tight and defined
but they lack depth. A quality sub will go a long
way toward brigning out the best of these monitors.

Cheers
The amp I have is the Rotel RB 1080 and Rotel RCD 1072 CD player, are these components not considered upstream. Also I have bi-wired the speakers. The Velodyne DD series would be my ultimate choice but a bit too pricey for me. I am seriously considering a AV123 MFW 15 now.
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