Doing a bit of a thread resurrection here, but I just ordered an X-Lite 551 http://www.ebay.co.uk/itm/XLite-X55...K_Motorcycle_Helmets&var=&hash=item1c38156710
Seems like a reasonable price.
That's a good price. I like this one http://www.helmetcity.co.uk/products/X%2dLite-X%2d551-Adventure-N%2dCom-Flat-Black-011.html but just need to find someone local so I can try one on. I'll do a Google.