I don’t use headphones much for mixing any more, but as a necessary studio accessory I had to get a replacement for my ATH-M50s, which broke at the swivel/fold joint.
Straightaway these were obviously more durable, heavier - and effectively not quite as comfortable as the audio technicas. They get hotter over time around the ears and are more of a clamp. But nothing too serious, and the headband is less irritating over time.
I’d split hairs over the ohms and thought I’d hit the right load but these do not work well with my interface (a Steinberg/Yamaha model): the volume has to be more or less full for a strong signal. My MPC X drives them easily so I’d suggest pairing with a good headphone amp.
Most important: sound. Subjectively these seem heavier sonically as well as physically than the M50s, my previous reference. Slightly soft low ended, possibly over-represented; and slightly dull high-end.
They are absolutely useable for my needs and they are wearable for long periods. I feel their reputation is an bit overstated but, as I said at the start, I’m not a heavy user. The carrying case supplied is as durable as the cans and has been useful for travel. There are no doubt better headphones out there… but these will do!