This... Living in the rainy UK and taking in some trails and muddy back roads during our riding/touring, I've lost count of the number of times I had to readjust the v-brakes on my wife's bike. Usually in a downpour. On a steep slope. I never had any problems with my discs. Perhaps we would have fared better with better quality v-breaks, but we ended up buying her a bike with discs brakes. She loves them as much as I do. I don't see myself ever going back to v-brakes.