The only headphones I'd want to wear for that many hours are Koss KPH40 or custom iems. I have the KPH40X and I can wear them indefinitely as they have no clamp, do not get hot and weigh very little. They have surprisingly good bass with good extension. I use EQ to add a bit more subbass as I listen to a lot of electronic that hits sub 30hz. I will grab them over my Austrian Audio Hi-X60 and DCA Aeon Noire every time unless I need isolation due to of ambient noise.