Which headphones are comfortable?


I'm looking for a replacement pair of headphones and comfort is a major concern. What model in $100 to $200 price range offers long term comfort along with good sound? Thanks.
timrhu
Thanks for all the info. The Sennheiser 580s and Grado SR-125s were topping my list and this info reinforces my thoughts.
Grado sr-125s...when of the best hifi purchases I have ever made....great sound,build, and comfort...I listened to these for hours on end with no listening fatigue, discomfort,etc...
Everyone's ears and heads are little different so it difficult to say which headphones are most comfortable. If you like the sound of the Grado's but don't like their earpads (I don't) they make a more comfortable pad that is is usually only offered on the SR-60, but is sold separately. You can cut a small hole in the center of the pad if you think it muddies up the sound.