Ofcourse Aamir Khan is best, look at his movies, different stories different plots different roles different looks and all looks natural, no over acting and his movies are good, despite his physic he still manage to do the best, and what a great Director, Taare Zameen Par-what a good movie, what a great presentation of sequence and emotions.....

And Shahrukh---same stories, same plot same roles same style, over acting (especiall in OSO---what a BS movie), he can't do anything new.

People who got brain think Aamir Khan is best.