mousemat

what mousemat do u recommend for a mx518, budget = £15 :< (ebay links plz)

Edit: i have been playing on a desk that slides in and out which is shiny wood and i've finally realised that it's fucked :/

demo: http://www.yousendit.com/transfer.php?action=download&ufid=0BEDB2122F60E872

notice it stopped half way through all the time :x

btw i only have like 20cm room for mousemat unless i put keyboard on lap :<<