Comfort, however,is extremely important. They need to be very comfy, preferably oval shaped cups, but if the headphones is good enough round is OK. Need to be comfy for 2-3 gotta hours without break.
On the amp/dac front, I need some advice on this for the headphones you Recommend, I will be running it through a pc for ninty percent Of the time, with onboard sounds that I assume will be inadequate. Max price of preferably 150gbp for both the dac and amp, but if it really is worth it, I'm sure I can summon up an extra 50 :-)
I am located in the UK as you may have noticed lfrom my GBP pricing, and cheap postage to the UK, along with easy access to the product from the UK would be great.
Thanks, sorry about the essay!