Phil Schiller got my vote, as I believe he would be the best to run the company in the current state. He appear to have more know-how and insight than the rest of them up there.
Yes, Craig is the best presenter, but that does not mean he fits the bill (Schiller is also good though; Cook is absolutely horrible on a stage - He should do a presentation with Nintendo and it would be the most hilariously bad thing in this century).
Honorable mention: Angela Ahrendts. I think she could do some very good things for the company since she's so consumer minded, but of course, she's not CEO material in this case. I do feel she should have more say in the company currently though, given the clear consumer-antagonistic way Cook is currently running it.