Subwoofer for Both Music and HT

I also am trying to balance both. I have had great success with the Paradigm Servo-15. However, no matter what you do, 2 subs will almost always sound better than 1. I am considering 2 NHT Sub Two's or 2 Vandersteen 2Wq or V2W.

Tyler Acoustics makes a Sub that uses the 12 inch Peerless woofer and 200 watt amp. Here's a pic. Its at the bottom http://tyleracoustics.home.mindspring.com/taylo.html

Another really good DIY sub is the Shiva. Here's a pic and a description. Just click on the Shiva sub on the right side. http://www.picturetrail.com/gallery/view?p=999&gid=1238643&uid=726956

Aerial sw12 , no question , for the money

The best value by far are the ACI subs. They combine musicality, output and looks. They're also backed by some of the finest customer service in the business.