Gotama, Rode NN loads, won races on em. Tyres are talked about to much on here. What tyre for this, what tyre for that…. No one talks about tyre pressures which is just as important if not more so.(again depends on rider weight/bike/wheelset/conditions/rider ability etc)
I just posted previously to make you think about somert else rather than just tyres. No point in commenting any more as I have never ridden in Surry Hills.
Njee20 comment about sliding around abit on tyres, thats more like it, get the rider to do a bit more than expecting the tyres to do everything for you. I rode a knackered pair of Crossmarks till Nov last year and it was very muddy, I seemed to cope OK by adjusting tyre pressures a little and moving my weight around while climbing and decending etc while my mates where using NN and RR getting the same or similar traction, I run stans tubless which also helps alot.