Hi, as my title states, I am looking for some new closed headphones. I listen to about 40% Classic Rock, 40% Jazz, and 20% Classical. For these particular genres, in my opinion, good headphones would need to have: good detail and clarity/good sound stage. I also would like the headphone to be fairly durable. Unfortunately the headphone need to be closed. I know it is not easy to get closed headphones that meet these standards so I'd like to thank you for your suggestions. My budget is 300USD or less. Due to my requirements and budget I am aware that I will probably have to compromise. Still, some optional things that would be pluses are: detachable cord, good isolation, and comfort. Thank you for your suggestions.
P.S. I am considering AKG k551 or possibly the Shure SRH 940(I understand that the Shures aren't very durable)