I need to get a new cpu and fast....But im having huge difficulty in making the decision. Its between the 4gb Macbook Pro vs the mac pro. I understand that the mac pro is a killer of a machine.... but is it really necessary for using after effects, motion and protools...???. Will the macbook pro run well with after effects on it????? I would like the portability of a laptop but need the power of the pro. what to do??? what to do??