Among Sound Engineers, the go to headphone is the Sony MDR-7506.
I say that because at two of my local sound companies, I asked the repair techs what is the most popular headphone, and that was their answer. Now granted, if its being repaired 3x more than any other model or brand that means two things--(1) They break; and (2) Its worth for the user to actually spend the bread to repair the unit, rather than toss it.
I have two pairs by the way, and love it.