I have no intention to race. I would like to do a couple of centuries a year and then just ride for fitness and fun. Our new cycling club has longer rides on Sat. that I'll be joining a couple of times per month too.

My keen's have a fairly flexible sole. When I put pressure I can feel the shoe bend which hasn't mattered much yet, but I can see it might on longer rides. Do mountain bike shoes flex like that? I don't care about the actual classification, but I do want stiff soles shoes.