Honestly, I'd say you are well served in either case, you just gotta ponder things like comfort and if you want open or closed, cause both are really great headphones.
Also check out the interwebz for what kind of music each might be better to listen to and compare it to your tastes.
http://www.wowprogress.com/pve/us/stormrage - Death Jesters 8/8 [H]Dragon Soul
Should be more specific about what you are going to use them for and what other equipment you got.
At the moment I'm using a X-fi platinum fatal1ty soundcard but I will probably buy a proper amplifier in the future, need to invest in headphones pretty quickly since my Steelseries headset died a couple of days ago.
K701 is kinda bass anemic but other then that it's amazing. Soft, big, enjoyable, cold. It all depends on what music you listen to.
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