If specs are your thing (and nothing wrong with that) look here..

http://members.cox.net/frankcarter/T...Sub%20Data.htm

Any true subwoofer will cause problems with surrounding rooms... if it
doesn't then it's not a subwoofer.

I would personally save up and buy a good sub..and not the first affordable
one you can.

Consider a HSU STF-2 or VTF-2 at $400-$500
or a 20-39 PCI at $600, or the 25-31 PCi at $550

Plus shipping and C&E charges.

I own a SVS (PC Plus model) it's bloomin' great..outclasses a Rel Storm &
M&K MX-350 :-)