I can't stand Beyerdynamic audio and don't understand why anyone recommends it. It has an awful treble peak you can't stop noticing once you hear it, and you can't drive their headphones without an amp.

I recommend HiFiMan Sundara/Ananda if they fit your head and there aren't any CPU fans in your room.

I don't.

Hifiman QA is exceptionally bad, and they tend to not stand by their warranty, and their US repair facility is just some dude's house.

The threads on /r/headphones over Hifiman shafting them are numerous.

Disclaimer: I too had a Hifiman pair, they sounded great, but their physical design just didn't hold up to daily use, no matter how much I babied them.