It would be helpful to have more info. like What music you listen to?, Do you have an amp or DAC?, Do you want a lot of bass?. Open or Closed? Stuff like that. I'm a noob but When I ask questions like the one I just asked just now, "I'm waiting for an answer", I tend to see people not posting stuff because I tend to not post enough information.
But this video might help. Although its the previous model of the M50 not the M50x.
https://www.youtube.com/watch?v=HxAWhNldzRw