What is your budget? about £150 = $220. Can go more if its REALLY worth it. Found some good shuer 425 deals on ebay..
Are you OK with open cans (they leak sound and don't isolate well)? I want in ear. No leaking sound
What equipment will be powering these cans? Will you be using an amp? - My mobile phone mainly or just pc
What is the format of your music and other sounds you will putting into these cans? FLAC
Describe the sound signature that you are seeking? Not sure to be honest, I listen to rock, just want everything to sound good. I don't need a punchy base. Just want the vocals, drums and all the notes to be as crisp as possible.
Do you plan to use them outside your home? If so, in what way & with what equipment? Just on my commute to work..walking..if I can run with them thats a bonus
Have you checked out the Buying Guide? Found here:
http://www.head-fi.org/a/headphone-buying-guide