I would be using the laptop for things like Photoshop, Illustrator a bit of movie editing and app development. Which one do you think I should get considering the 15 is £500 more and I could afford the 13" 2.4 now or wait about a month to get the 15" i5 2.4? Also the higher resolution of the 15" doesn't really bother me but the portability of the 13" is nice.