I took the m50x first to my father, then I decided to try msr7b for myself, which I returned the next day and bought the m50x Msr7b for metal buzz, but everything else is just normal (cx300ii is approximately the way the equalizer was set up). m50x are good everywhere, except for metal, it seemed a little dry. But everything else, electronic, instrumental, jazz, blues, clean vocals, especially old compositions play in a new way. I liked that the ears rotate as soon as you want, no squeaking and the laces are removable. In msr7b, respectively, the opposite is true))