Well I've gone for the "middle ground" on price. Bought a set of Mefo Explorers yesterday, won't be fitting them for a couple of weeks as there is still some life left in the 605's. The Mefo has a rounder profile than the K60 and the tread looks a little deeper than the E07, also looks a little more dirt oriented as far as tread pattern goes. If I can get out around 10,000km from a rear tyre with a 50/50 type tread I would be happy. I will be getting in some decent ride time over Christmas to try them out. Thanks to all for the replies.