I am currently looking into getting a 13" MPB and would like to know what is the best one to get. I will be using it for the internet, itunes, email, mac application development and my college classes. i dont really need snything too over the top. also is the 13" a good size screen. i have seen em at best buy and the apple stores and it seems big enough but 15 seems just right but dont wanna fork out another 800 bucks. i do plan to buy refurb though so i may go with a 15 if the price is right.