What's the best closed-back headphones for video editing for voice and music separation?

I'm leaning towards Audio Technica ATH m50x since it's hyped and I've seen some popular music producer artist use them, but some have said that it's not the best for editing.

It was said that it's not the best for wide sound stage separation especially when the ATH m50x can over power the music on top of a voice over. Thus, you'll not have a proper mix of audio... 

We travel a lot and ATH m50x is portable with a detachable cable. But also I'm not opposed to ddt770 80hms at least.