Why would someone choose a 15 incher over a 17 inch pro? Would it be for a smaller laptop, how much smaller is it? Or is it the new LED displays, what makes them so great? And, lastly, will they be implemented on the new 17 inchers soon? Any other advantages/disadvantages? Thanks everyone for the patience! I'm a new Mac user, as many people are these days. Switching sides is pretty exciting...It just comes with loooooots of questions. Thank you and take care!