My take:
West - Moore.
Keaton - Connery.
Kilmer - Brosnan.
Clooney - Lazenby.
Often criticized because of his wooden and dull performance. The film wasn't as big of a success as the others and Clooney's Batman is often considered the worst, but perhaps slightly underratef.
Bale - Craig.
Affleck - Dalton.
From what we've seen, Affleck's performance is going to take the source material into heavy notice. A dark, troubled character, who is exactly like the character in modern Batman comics. Just like Dalton was closest to the Bond of the books.