Brosnan: The perfect Bond look. Whenever I imagine "James Bond" Brosnan is who I see. In terms of look, he had it down pat.
Connery: The best "ultra classy gentleman" Bond, the true Bond form. I think that Sean Connery being the first Bond automatically locks him in as the choice for the purest Bond. He set the style and I think was the best at it.
Craig: The "real" Bond. Although this is due mainly to the movies, Daniel's stylized action hero Bond that was tough and brutal was fantastic. As an actor he was better than Brosnan. Quantum of Solace would have been far worse had it not been for his acting.
If you could combine Brosnan's looks, Craig's acting style, and Connery's charm you'd have the picturesque James Bond as he would really be.