I'm getting ready to pull the trigger on a new sub. Its come down to 2 Velodyne subs-

The Velodyne Optimum 10" http://velodyne.com/products/specs/OptimumSpecs.html

or

The Velodyne Digital Drive DD 10- which has an adjustable high gain servo control

http://velodyne.com/products/specs/DigitalDrive.html

In doing some research on subs, I've found this site of reviews for FYI-

http://www.avrev.com/equipment-revie...5/start/0.html