I'm looking for a sub for music. I heard a demo of a REL with B&W 802's and I could not believe the improvements in the sound. Not just the bass... EVERYTHING sounded better. Something about harmonics the REL literature explains. I'm convinced that my Mirage OM-6's could benefit from a musical sub. Yes they have built in powered subs, but technically, the 802's are full range as well. I also have a dip in my room from about 60-80Hz, so I'm hoping a carefully setup sub will smooth out the room somewhat. I'm interested in hearing about people's experiences with REL (or the Revel B15, although it's twice the price of the Strata III). I am not looking for high output or super-deep extension. I am looking for musical, tuneful bass, and hoping to smooth out the bass response in my room. I also hope to get that overall magic sound improvement that I heard in the REL demo. Any experiences to share? Any other suggestions for musical subs in the $2000-4000 range (Canadian dollars)?