Subwoofer for Both Music and HT

I have seen forums for subs for one or the other but not for both. Any opinions out there on subs that will work well for both 2 channel and home theater? I have Merlin VSM-M's in the front with a VSM-CC and an older pair of VSM-SE's for the rear. Appreciate any feedback on what has worked well in your systems
Sounds Like Sugar is all over this question, and I'm sure knows more about subs than I do, however just to through out another suggestion, the Paradigm Servo 15 is a very high regarded sub. Velodyne is also a great sub maker, but I think that it is geared a little more towards HT (it's not fast enough for music) but I wouldn't quote me on that.
Thanks for the info Sugarbrie. I am familiar with REL but did not know they allow you to set them up seperately for music and HT. Will check them out
I 2nd the opinion about RELs. I have a Strata III and tried it in my HT setup (have a hi-fi set up in different room). The REL blew away my 1,300.00 M&K. It's a true set up and forget it pc of music equipment. Should blend beautifully with just about any speaker.
My ACI Titan II LE subwoofer has performed marvelously in both roles, though I use my 2-channel system for music 99.5% of the time.

I still have not become acclimated to all the bass and subsonic energy that they put into movies these days, which only became apparent to me after I purchased my subwoofer. The Titan II LE is sonicly unobtrusive but very musically effective, seamlessly filling in the lowest octave (and then some) of music, in concert with my Vandersteen 1C's.

When I play a movie (again through my 2-channel system), things can really get exciting, especially in action films and the work of directors such as Darren Aronofsky ("Requiem for a Dream", "Pi", etc.) who make sound such a viscerally affective element in their work. I'll know that I'm a true HT devotee when I no longer feel the need to reduce the level of the subwoofer during most movies.
I also am trying to balance both. I have had great success with the Paradigm Servo-15. However, no matter what you do, 2 subs will almost always sound better than 1. I am considering 2 NHT Sub Two's or 2 Vandersteen 2Wq or V2W.