But honestly its hard to say. It should be Naruto; however, I could see him sucking it up to Sasuke...would deffinatly break the whole Cycle of Hatred. As long as in their final fight, Naruto teaches Sasuke how to care about the people (as many probably noticed Naruto give him a look when Sasuke said he doesn't care what anyone thinks).
Naruto should be Hokage, but I could see it going to Sasuke.