I never heard the M50s, but I onwn both M80s and M22s. When I used the M22s (for test) in my may setup instead of M80s, I did not notice any difference for movies, only for music. I love the M22s and recommend them all the time to my friends. They're very cheap for the high quality sound they produce. I still prefer the M80s all around, but the M22s have carved their name on my heart.

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