From my brief auditioning (and out of a Note 3), my end-game headphone seems (and has seemed to be for the past 4 years) to be the HD 650.. except for the fact I don't want to buy it because 1) don't want to pay $425+ for it when I first saw it at like $325 years ago and 2) the issues with its paint and headband. If they revamp it so it doesn't have those issues, I'd probably be happy to pay $425+ for it. Has everything I want; liquid mids, impactful / textured but not bass-head level / overbearing bass, neutral to rolled-off highs, and a soundstage. HE-400s are missing 2 qualities sadly.
Wanted LCD2.2's too but doubt I'd like them too much, especially considering it's price, due to it sounding more closed apparently and because it's a brick.