I have and use those headphones, they are great. But there are some awesome open back headphones which I think a lot of people would enjoy, both from a sound and a comfort point of view.
For instance, I use sennheiser hs560s for my pc, the wired version costs as much as the bluetooth m50x (although hd560s benefit from a dac which adds cost). they have much better directionality than the m50x, which helps a lot in gaming. the more open sound stage is nice and you can wear them for much longer without getting sweaty. The mx50s are also way more bassy which is subjective if good or bad.
The m50x are great, but they are really just the tip of the iceberg.