What were the differences between Banquo's and Macbeth's reactions in Act 1 Scene 3?

In Act 1 Scene 3, Banquo and Macbeth differed in their reactions to the witches, and to the realization of part of their predictions. Banquo was skeptical and somewhat joking about the witches. Macbeth was increasingly attracted to and interested in what the witches had to say. Banquo was shocked and cautious about the realization of one of the predictions, in Macbeth's becoming the Thane of Cawdor. Macbeth became ever more ambitious in making the promise of kingship turn out, and ever more aggressive in pursuit of that promise.