Any idea which headphones I’d like?

Everything focal makes right now is pretty good. The Focal Elex on mass drop is only $600 and is every bit as good as the others. The Clear MG is pretty great at $1500. Don’t buy sennhieser HD800s, you will hate them…. Ear tweeters.
I have had many of the highend headphones and only keep around the focals (and Grados) at the moment.
Audeze headphones have some odd coloration in the mids as do most planer but wow the bass is special. Try to demo them.
You could buy a few off Amazon and crutchfield and just send back the ones you don’t like.
The nice thing about headphones is you can own a few pairs with different sounds.

edit:

I see you have owned the Focal Clear. Honestly this is 95% as good as it gets with headphones. If they did not do it for you, headphones might not. 
Some brand generalizations below. 

Focal=good all around 

Sennhizer HD800=best soundstage (bright needs tubes). 

audeze=amazing bass but odd mids and rolled off highs. 

highfi man=weaker bass than the audeze but a bit more soundstage. 

Grado=the horns of headphones, love them or hate them. The PS500e is pretty great with flat pads

Fostech= subwoofer type bass. 
Mrspeakers=somewhere between audeze and hifi man. 

Focal Clear MG Professional.

@soix I’ve generally leaned towards “warm.”  I don’t prefer bass heavy vs. detail.  I’d say the one thing I’ve always really liked is a large soundstage.  I prefer a warmer midrange, with accurate bass vs analytical with some bass bloat.  I do not like mushy, I sold all my McIntosh gear because I felt it sounded “mushy.”  

I’ve always really liked Dynaudio speakers.  I hear a neutrality in them, that I didn’t really hear anywhere, until I heard the Harbeth’s.  I just prefer that the gear not color anything, that’s all.  The Pass Labs + Harbeth was a winning combo to my ears.  

@james633 Thank you for the info!  Ahhhh, the beautiful last 5% that makes us spend our discretionary income…and sometimes then some on audio gear!  

Don’t get me wrong, I really did like the sound.  But I have the opportunity to focus on that last 5%.

Per the Sennheisers, I’ve read that they really need tubes and become almost magical with the Western Electric 300B tubes.  And I actually may have listened to a set, being driven by one of the McIntosh HA’s.  I didn’t come away thinking anything other than, “jeesh, McIntosh is ripping people off with this thing.”  

I’ve read some very positive reviews on them, out of curiosity, what is that you do not like about them?  

So, Clear MG’s over Utopia’s?

@master92, do you use them for Mastering?