Iv`e have diffently not heard them all,but after my opinion the DD series from Velodyne it`s proberbly some of the best Sub`s out there. They are all digital and there is roomcorrection with it, with a little microfon so you can correct the bass to play where you sit and listen, very smart! I used the DD12 for music at the most, and was expecting very much bass, but after pluggin it in i was not overwhelmed. But after getting used to the Sub, i cannot imagine my self without a sub. It`s much more fun with a sub, and you will hear bass that you didn`t now was there......I think ยด`m gonna have another DD12:-))