Christopher. It's more...streamlined than Clayton. But then again with a name of Clayton people can just call you Clay, which is a lot better than Chris. Because when a chick talks to him Chris will be like "Yah, my nickname is Chris...it's short for Christopher" and the girl will be like "Oh..that's...interesting."
But Clay, he'll be like "Yah, my nickname is Clay. It means I'm flexible and willing to adapt to various situations, just like clay, get it?" and the chick will be like "Oh my god I love you!"
So maybe Clayton after all.