Ohm owners: What headphones do you use?

I am a couple of years out from a downsize that may prevent me from running my much loved Ohm 2000s at a, um, satisfying volume. So, the search for a good pair of cans has begun. I currently have a pair of cheap and cheerful Grado SR60s. They are fine for occasional usage, but not as a main listening headphone.

My requirements are:

Over the Ear design only

Open back only

Comfortable for long listening sessions

Nothing that will make my ears sweat

Excellent durability 

Priced under $1200.00

Initially, I intend to use the non balanced headphone output on my McIntosh C220 preamp.

Based on research on the web, my three favorites, pending an audition, are:

Grado Statement GS1000x

Mezze Audio 109Pro

iBasso SR3

I am asking this of Ohm owners, because I want to get as close to the Ohm Walsh sound as possible. No fatigue, great detail, wide soundstage, excellent bass extension, good imaging, and the great tactile feel of instruments both human and man-made.

Thanks in advance for any comments on the cans listed or any others you think will get me as close as possible to the sound I love.