cel4145
Headphoneus Supremus
I can get one for 160 euros at an online store within the netherlands. I'm not sure if I like them, I've read some reviews about them and they don't seem seem to be as good as the headphones I've listed.
I own the M50s, and the K550s are a much better headphone overall. I would argue, a higher class of headphone. Read this review: http://www.innerfidelity.com/content/wonderfully-competent-akg-k550-sealed-headphone.