I picked Brad Miller.
No one is more reliable from 15 feet than him...If he would just shoot every chance he got, he could average close to 20 points.
I like Mike, a very close second, but I feel Brad can just hit that shot whenever he needs to.
And Peja...He'll be great draining everything he shoots, no matter where from, how heavily defended, or whatever, but then he just disappears for long stretches of time. And he's the last person I want taking a clutch shot.