Speaking for myself, I like music to be played in front of me and not around me. I have tried it and it simply doesn't work for me. For movies, of course, MC works great.
That's fine, but while I only have a few mch recordings, I am trying to follow Kal and others as there are some simply stunning mch recordings available (mostly classical). They give you (OK, me) a much better sense of "space" and recreate the concert experience (usually minus the guy on his phone, lady humming along with the music, and kids fighting over the portable game box). My biggest issue so far, other than simple lack of time to listen and spending too much time posting instead of searching out more discs to buy, is that I like jazz and new age (gasp!) as well and there do not seem to be nearly as many mch recordings in those venues. I have a couple of rock DVDs/BDs (Eagles, Pink Floyd) and some more eclectic stuff (e.g. Celtic) that sounds pretty good to me.
Maybe because I have played with so many groups through the years, and attended a number of shows in various venues small and large that had really good acoustics (direct and ambient), I am more used to the music being all around me.
I have been disappointed in how little use of the surrounds many movies seem to make, especially 7.1 (no experience with Atmos and such). Too often they seem to provide the occasional effect (car or jet going by) instead of immersing you in the movie. Again, just my opinion, take for what it is worth. - Don