Candys. Mr Shi**no doesn't need your money.
If I can overcome my hatred of Shi**no for a second. *deep breath*
Not much in it in terms of performance, Shi**no spares being marginally easier to attain. Crank Bros pedals have several degrees of free float which is kinder to your knees that the spring loaded float found on Shi**no systems and their clones. I honestly think that the CB system is the work of a design genius, not that this fact in itself should be enough to persuade you, what really matters is that having CB pedals on your bike will distinguish you, in the eyes of those who know about these things, as a forward thinking individual with impeccable taste. Oh and good looking too.