Hi. Do you need the phones so that other people around cant hear any noise coming from them? Like maybe if someone else could be disturbed by noise leakage from the phones?
I have read on here that the closed type headphone does seeem to be preferred for gaming. Play.com are doing a good price on the senheisser 280 pro at them moment.
£20 above your price range though might be worth saving up for?
http://www.play.com/Electronics/Elec...searchsource=0
the pxc250's are noise reduction phones. they are £60 from amazon.
these Beyerdynamic DTX 900 Headphones look a good set. But are open. which means other people around you could here what you are listening to to varying degrees.
£50 amazon
http://www.amazon.co.uk/Beyerdynamic...68846&sr=1-148
Have a search on here. you might find some usefull reviews. Im no expert thats for sure. been looking for some closed backs myself. cheers, pixel