The ucx has a cheap headphones eq preset setting I use often in my output bus.

In the 1980's, I bought a STAX Lambda Pro. I have used it ever since, very frequently.
 
The headset is comfortable, the lining has not degraded, it still sounds wonderful. Clean, analytic, fast. It always helps to keep the subwoofers on, because you miss the deep bass body feel with any headphones. Maybe some day we will get the full body headphone?!
 
It cost me a bundle - about $800, I think, back then, but I have never regretted the purchase.
 
I'm sure this version has been superseded by many other versions - but I thought I'd put in a good word for the product line.
 
The headphone amp is Class A and provides the necessary high voltage for the electrostatic membranes.
 
Summary: expensive, but worth every penny.
 
 

I just picked up a set of beyerdynamic DT880s. They are open back in design and wear rather well over hours of work.  The sound is closer to reference quality than some and the soundstage fairly wide for my ears.  They don't color the bass frequencies which for me, is something I chose to work on this year in my mixes.  I am getting a lot better at correct levels and mixing the bass guitars, synths and bass drums so I can distinctly hear each of them.  Another thing that I liked about them - when I try a mastering toolset that includes stereo\mono enhancement and limiting, I can really hear the most minute of changes in the stereo field, throughout the frequency curve.  A disclaimer of sorts -   We have some really talented folks on this forum, and I am about middling to average.
 
LL 

fireberd
I'm using Sony MDR7506.  Great for the price range. 

I have those as well. It was ear opening when I switched to KRKs as my primary headphones. Helped my mix process enormously to move away from the Sony ones, which sound great but deceive mix-wise.

Double post

Get a list of preferences then wait for a sale.

My vote is for beyer dynamics 770's. They rock.

SRH940 - Mixing translates very well to monitors.