Just yesterday I listened to a 5.1 DVD-A of The Polyphonic Spree's Together We're Heavy (classed as "symphonic rock" -- music that will definitely not be to everyone's taste!) And while I enjoyed the music and the surround mix immensely, I remembered this thread and decided to listen to a few songs in its PCM Stereo mix. It was fine, no complaints, but compared to the 5.1, the stereo mix was flat, uninspired and uninvolving. If I didn't have the 5.1 of this album, I never would have known what I was missing, and might have been happy with the 2.0. But I do have the 5.1, and won't go back to 2.0, not for this album anyway.
cheers,
supervij