NEW owner here!
I ordered the Chromes from jjet, via Beach Audio (hoping their authorized reseller) and the deal came with an A5 from Fiio and I paired it with an iPhone 6S Plus. Out of the following,
AKG Q701's, Sennheiser HD580's, Grado SR325e's, Audio Technica A900X, Westone UM Pro 30, Sony V6, Little Dot Mach III, Pimeta, etc...
I'm happiest so far. It's the perfect combination of soundstage, not so big that everything seems disconnected like the AKG's (even with the bass mod), also, these were incredibly uncomfortable due to stupid bumps on the headband. Not so tiny that everything's coming from one place, ala Westone UM Pro 30. In addition, the Westone had far too much low end and far too little low end IMO. The AT A900X and V6 have a closed design and neither felt all that detailed. The HD580's always felt too laid back and a bit "boring" to me. The Grado's came closest to my ideal headphone, but again, the soundstage sort of compressed things and comfort was an issue.
The 880's FINALLY have that sparkle in the highs I've been searching for. The soundstage is wide enough to enjoy the music, but not too wide or too narrow. The comfort's almost perfect, except that it touches my left ear ever so slightly. It's also fast. Bass does not overwhelm me either.
Any ideas how to get the foam to stay a bit further from my ear? The Chrome's definitely have a larger muff than the premiums which basically sat on my ear, but I would prefer just a bit more space.
Overall tho, I have always steered clear from folks saying "Oh, this is too bright or too hot or will fatigue you, etc." I never could figure out why everyone raved about the HD580's (at the time, this was YEARS ago) as I found them "plain, boring, unexciting, etc". So IMO, "warm" is the devil. I have banished my Westone UM Pro's to the closet until I can figure out what to do with them.
Anyway, I'm super super happy with the Beyer DT880 sound. It's fast and I feel like I'm hearing every part of the track. Nothing is hidden.