Just hooked up one of these (10" version) in my bedroom to my HT for testing purposes.
These subs sound great! I must admit I was not expecting it to sound so clean but it is really impressive and more efficient than the specs may suggest. It will only get better in a car with cabin gain on your side.
The one in my room is in a sealed prefab I had lying around getting about 500wrms and its shaking my room up nicely and it blends into the rest of the system easily with very little tuning.
GLWS OP, great price. Someone should jump on this ASAP. If I didn't have my 10s, I know I sure would.