the best headphone is the one without all the movement...
if you can flip the speakers, or bend it in any direction, things WILL EVENTUALLY break, no matter it says Pioneer, Sony, Technics or whatever, that's just a fact.
Nothing can stand the forces of the physics law...
The Pioneer SE-450 though.... This baby, wich I own for allmost a decade now, have NEVER failed me! If there's one headphone that has it all, the SE-450 got it!
AKG is a "new"brand, they make headphones simular to the SE-450.
I tried one pair a few months ago, they really blow your ears, but it has an on/off switch that's mounted on the headrest. So if tou are small headed, or you put the headphone in your neck, it will automaticly mute the sound.
I tried the k271i monitor headphone.
also check www.akg.com
there's more to explore!