So i wrote this in the HI FI forum and someone told me to ask here aswell. Basically i have had my hd 600 with my amp for a couple of months now and really like it. But i am often on the road and need a pair of good portable headphones that i can use on the go. I have looked at these headphones so far: B&W p7. Adudio technica mrs7, oppo pm3. Feel free to give me other headphone suggestions!