best subwoofer for less than $1000


Im looking at Velodyne and Svs primarily, but if there are any others that are worth while feel free to mention them.
sburken
Used Alon/Nola Thunderbolt. Very fast, tunefull and deep true bass. Fast enough for planars or stats.
Would you consider $1050?

After all of my research and auditioning, I will soon purchase the ACI Titan, although I have not heard one yet. $1050 for the basic model (plus $20 for spikes) with free shipping until Dec. 31.
response to Sdcampbell
*i do 50% music and 50 movies so the sub miust be able to do both well. I own nearly 1000 cds and listen to mos of them in all genres
*I want a powered subwoofer (easier fiddle with for me)
*main speakers are wharfedale opus 2s and go to 30Hz comfortably.
*my room is 28'L by 22'w with 8' ceilings
Anyone know when the new Hsu HO series is shipping?

I'd take an ACI or HSU over SVS for SQ. But a SVS 1st if SPLs is your concern.