Sendy Peacock
Neumann NDH20
DCA Aeon 2 Closed
Kennerton Vali
Beyerdynamic T1 3rd Gen
Grado RS1
Grado SR80x
Out of these, the Peacock basically fulfills all my serious audiophile desires, and the NDH20 fulfills all my portable and closed isolation needs. The Peacock, if I use my Hugo 2's high frequency roll off filter, plus the crossfeed (which also increases bass slightly) and my DCA Vivo cable (which further smooths the treble), this is the most versatile, well-rounded, flawless sound I've ever heard. The NDH20 has 10/10 passive isolation, and just nails everything that's it's trying be as neutral midrange closed back. I love this as a portable option when I use it with a smooth amp that can increase bass, such as the ifi goBar.
These other headphones have obvious weaknesses: Aeon 2C has unsatisfying bass, Vali is a bit too harsh and bright, T13 has fatiguing bass and weirdly emphasizes upper treble, and Rs1e I think would need a tube amp to sound it's best, and I'm totally not a tubes/analogue guy. SR80x is shockingly different from the old i version I used to have, and NOT in good way.
If I was rich, I would immediately go buy a Hifiman R10p and a DCS Bartok. What I like as an audiophile is "analogue flavor without the hassle" but I also demand built in crossfeed, because I find it works wonders on my Chord and iFi devices.