Subwoofer for Wilson Cub

REL is your other Choice for a fast sub, or even the Vandersteen subs (get a pair of the music ones) with the sensing speaker cables 3x8" woofers a side move fast enough and they respond at the same time your speakers do.
James makes some fast tight subs.

In the context of matching with Wilson Speakers only (Not intended to draw flames as I am a Velodyne owner also) Unfortunately Velodyne DD's aren't fast enough for music but great for Video.

Good Luck... but if only those three choices you have them listed in the order I would select 1)Wilson Watch Dog (I own one and use it with my WP7's) 2) lots of bass but not quite as fast 3) more bass but not as musical (I owne a Velo 18" in my video system and it rocks, plus the new correction system is awesome)
Chris

Hi. I use a REL StormIII with series 1 CUBs. The integration is seamless, and the sub is relatively discreet - have a look at the REL website for exact dimensions. Cheers, Rob.

Forget the sub, and take that extra $, and apply to a full range speaker, IE Watt/Pup, etc.

Try the big Maggie HRS 150 950 real watt's active power.
Servo controlled. These will eat the Rell alive.
Very quick and dry. Even the HRS 120 will do a great job

gr

Alex