I've broken my ankle in a rock garden hill climb by snagging a toe in a street boot with velcro/zipper. Never again. Next was Sidi Discovery. They are a heavy 3 buckle boot and I recco. Then I bought Gaerne Balance Oiled. Probably the most comfy ever, but not sure about protection. Still, it is a trials boot and them boys like rocks. 3 buckles tall.
MX boots are probably the most protection. Even the cheap ones. 4 buckles tall and lots of stiffness.
Straight ahead and faster -Bo Weaver 1970
"There I was..." -Griffin Niner Three Hotel
"One day closer to a parade..." Jonny Gomes, spring training 2013