The Yamaha YST 800 and 1500 are among the tightest and most musical subs around, those who pass judgment on it haven't had the chance to hear it, I own both and have had the chance to own subs of other brands, I can tell you, the only other sub that matches Yamaha is REL. The 1500 is fantastic as it has gobs of power when you need it, yet remains tight.