So i got the DT 700 PRO X. The sound seems a little bit darker than DT 770, with less treble, but a lot more detail. It sounds definitively better than my vmoda m100 for genres like metal (i listen 90% to black metal, prog metal, mathcore). Isolation is better than DT 770. Also its way easier to drive. Weirdly enough its louder on my smart phone than on my ipad pro. I already have an fiio amp (e12) which i really dont need as i bought it for my dt 770 (i note i wrecked my 3.5 mm of the dt 770 so isnt usable anymore) but it adds a little bit of power on my ipad. Gets very loud on my laptop. Comfort and build - i dont think i have much to add. Its even more comfortable than dt 770 ( even w glasses) and the design is a clear upgrade. I plan them to use mainly at home, but consider taking them when using public transport. Also i should add bass is simply marvellous. But i dont like too much bass, as some music i listen is already bass haevy (for example Frontierer. album example i tried them at the beginning: Frontierer - Oxidized, Slice the Cake - Odyssey to the West, Agalloch - The Mantle, Opeth - Blackwater Park, Dillinger Escape Plan - Option Paralysis, Katatonia - Brave Murder Day, and the bass test lol Electric Wizard - Dopethrone).

Criticism: The mini xlr connector digs into your shoulder depending on position. But thats it.