That's funny because for me, music sounds better with just sides rather than just rears. And for movies, just rears is better than just sides. Of course, all of them on is better than just half on.
I want to see a pre/pro that takes a frequency response measurement of my ears, then my room and provides the requisite compensation. And it should incorporate a "sound containment field" so that sound doesn't spill outside my designated listening area. And "sound shields" to prevent unwanted sounds from entering.
