Get the M22s. Practically every movie you get these days is mixed with a subwoofer in mind, crossed over at 80 Hz. All the fullness of the M50s is cancelled out by that crossover. The M22s are clearer and more precise in the upper ranges, and really DO throw a more 'holographic' soundstage than the M50s.

M22, M22, M22. M50s? Been there, done that.