got the sennheiser hd25sp's, fucking mint, the clarity is great and they get really loud without too much distortion, quality for the princely sum of 65 quid
I had sony's for years and towards the end i struggled to hear anything through them when i played out on a big system. They were spot on in the house though lost their sound quality over the course of a few years, so replaced them with some HD-25's around 6 months back which have been spot on so far.
I saw these badboys they look ace.. Beyerdynamic DT770 pro... http://www.guitarampkeyboard.com/en/dt-770/804