Rel Stadium III at this time, but if I had the money I would go with the Rel Studio III. I don't know of a deeper, faster, more accurate sub. The Studio III has 2 10" Volt drivers and goes down to 9Hz. You may have to double dry wall the room for it to survive. The Stentor III would also be well worth a look. The Stentor III goes down to 11Hz and the Stadium III down to 12Hz. These are very musical subs as well with versatile hook up options The Stadium III retails for $3000, Stentor III $5000 and the Studio III is $9000. Forgot to mention that the finish is beatiful on these subs. I love mine and the reason being is that the bass is as it should be and does not distract from the movie. It is quick, tight, deep and accurate. www.rel.net
