Well, the first time I ever used hydros was my friends Hayes Nines with 6 inch rotors. They had so little power I never wanted to use them again. A month ago he slapped some 8 inch rotors on his bike, and now they make me want to pay extra for them. I know Hayes Nines are not the most powerful brakes there is but just going from 6 inch to 8 inch really made them stick out.