btw: Paradigm and SVS PB3000 measured at 2m by James, so for the Rhythmic chart look at the right column.
In addition to SVS and Rythmic, I'd add it's worth considering HSU, Monoprice THX, and PSA.
All much more capable subs than Paradigm.
Also, just in case - You absolutely don't need to worry about brand matching sub and speakers.