Koyote

Whether they look alright on a cf race bike is debatable -- but for consistent bottle retention, nothing beats this one. I've got so many King cages that I've lost track, but I'd guess that my oldest pair of these (purchased in 2005) have been used for around 50k miles so far. And the brilliance of the design is that they never -- NEVER -- lose their shape, never need to be bent back in order to hold bottle snugly.