These closed back cans they will tell you lots of things! They reveal many things in EQ work and they are super comfy. Obviously the comfiness is tiring after a while and for someone like me; my ears start to sweat after a while, so breaks are a necessity; but that's not the headphone's fault.
Except that, I know that there are people that say that you hear the squeaky plastic which is quite true, but its not something that bothers me as it happens rarely and i have to move my head around.
Otherwise, these have proved to be a game changer for me as tracking and some mixing work has became easier in the context that these revealed things that with other ways couldn't have been audible!