Midrange is that flagon of wine, thank you very much :)
Much as it has endeared itself to exotic descriptions, the z5 are very much in my book of impressive IEMs.
I just wonder at the use of that super tight but super thick bass. It gave me the impression that it could not fully blow up its potential to greater heights.
I think it's due to the poor source: my iPhone 6 plus.
So either an amp or/and burn-in should make short work of that super tight and thick bass.
Else, it does not bleed into the mids, and trebles are super loved by me.
Like i said, a complete package and no other headphone can do pop/dance music as well as it.