Probably the best sub for music is REL. These subs use a balanced speaker level input direct from the amp so that they blend seamlessly with your main speakers. They are the fastest and most accurate sub that I have heard. They also have the best system for adjusting the crossover point. I have the stadium II model and it is the best out of the last five subs that I have had. It definitely is more expensive, but the cabinetry is also one of the nice things that attract me to these subs. The only other one that I have not heard that may have an edge is the new very pricey Aerial sub that has been getting great reviews.
