I'm hardly an expert, but after a similar hunt I wound up with an SVS SB12-Plus:
http://www.svsound.com/products-sub-box-sb12plus.cfm
SB stands for sealed box, which while not quite plumbing depths as low as ported boxes, many seem to prefer sealed for music. It goes plenty low...
Lots of connection options on the amp, a simple equalizer (that works!), and reasonably priced. I like what it's done for my two-channel rig.
http://www.svsound.com/products-sub-box-sb12plus.cfm
SB stands for sealed box, which while not quite plumbing depths as low as ported boxes, many seem to prefer sealed for music. It goes plenty low...
Lots of connection options on the amp, a simple equalizer (that works!), and reasonably priced. I like what it's done for my two-channel rig.