I am going to say it depends on the movie mix. I am a 2 channel movie guy and most movies sound pretty darn good. Pixar's The Incredibles is astonishing. Watch the scene where Mr. Incredible goes to see Edna for a new suit. Poorly mixed movies (Transformers: Revenge of the Fallen) can leave the dialog very recessed and having the ability to bump up the center would be nice.

M3 and
M80