"i dont think people the other side of the pond really appreciate how muddy it really gets over in the uk" My town gets more than 25 cm a year over yours. I would stay away from blanket statements like that. Between my riding buddies and I we've tried just about every tire out there. The majority will take a Minion over a Nevegal which washes out at high speed. For muddy conditions the consensus is either Michelin front and rear or Michelin rear with King Of Traction front (my preference). The Michelin has much more bite in the rear and does fine over the slick roots. Even still, lots of our trails are composed of super slippery clay which will pack up in any tire. Anybody who thinks the high roller is good in the mud has never ridden in the mud.

Unbelievable talent!!