Originally Posted by sadbuttrue 
I was going to suggest the sennheiser hd595, but they appear to have increased in price quite considerably. The cheapest I can see them for now is £110 on eBay, although some second hand ones are...
The weakening pound is somewhat annoying. I purchased a pair of ATH A900's a year ago for £110, and they're not much more brand new.
OP : Check out the Audio Technica and Beyerdynamic range for your budget. I've used both companies and am very happy with their cans.