Whilst I dislike Beats, I admire them a lot. They entered a market where every company was focusing on sound quality first, aesthetics second and they came in with a new take: headphones should look good (I actually dislike the style but a lot of young people seem to love it), and should have a lot of bass to make certain types of music - music listened to by young people - sound good (again, I dislike this but many…
My huge Beyerdynamic cans would represent a health and safety issue if worn outside the house and the 400 Ohm impedance is not a good match for battery powered devices.
The humble Sennheiser HD201 headphones seem fairly popular for those less well-heeled students upgrading from the supplied ear-buds mind you. Lots of bang for the buck.