I recently purchased a HSU VTF2 Mk II, and i think its spectacular. Many of the reviews i've read claim its one of the most musical subs in its price category. I lack the experience with subs to make such a claim but i am not disappointed with this product. I don't have much to compare it to, but the bass doesn't ever drag out or flood my room and drown the rest of the music out, you can really hear the bass drum punching with it accuratly. It's a new experience for me since all the other subs i've heard before were cheaper models from the likes of paradigm, infinity, and so forth. Another option could be the Dayton Titanic Mk III, another well reviewd sub by some members of this forum.

Wayne