I'm shocked no one has mentioned what I believe to be the absolute best bang for your buck sub on the market the RSL Speedwoofer 10s. Just Google the Roger's Soundlabs 10s and look at the review after review after review. Sound and Vision says when comparing their reference subs the 12-inch SVS PC-Ultra ($1,199 in 2004) and the 15-inch Hsu Research VTF-15H MK2 ($899), "the pair of these **** near matched the audible and tactile impact of either the Hsu or the SVS when used alone. Were there limitations to what they could do? Sure—the Speedwoofer pair couldn’t go quite as deep as the big boys, especially when playing some organ samples that dip below 20 hertz. But, truthfully, it’s rare to find bass this deep, and given the difference in cost and size between the Speedwoofer and my reference subs, that’s a pretty reasonable trade-off. The price is $399ea or $79for a pair and I'm here to tell you I've owned 7 different subs over the past 5yrs, 3 12" subs, 1 10" sub, 1 dual 10" (dual active driver) sub, one 8" sub and 1 dual 8" (also dual active) sub and the only ones I've kept and refused to sell is the Speedwoofer 10s and the jamo D4 (dual 8s). You probably won't find the jamo for sale anywhere but I'm sure you can order the RSL from just about anywhere. Hope that helped.