Im going to buy a macbook pro eventually. I have nearly saved up enough for the 13inch previous model. Is the retina display really worth the extra £500 and should i just go all in and buy the 15 inch retina display. Im only working as an intern and need a new laptop to keep up with the work load. Its not overly complicated work im doing and i will probably invest in a mac pro when I get a paid job but in the mean time which model would be best for me. Anything would be better than the current model im using.