Hey all, Long time lurker here and have just signed up to get some advice. I was originaly planning on getting a 13'' MBP when they were updated and now since the update, the CD2 is kind of pushing me away. I am a full time college student, currently half way through my engineering degree. I would be using the computer for word, power point, excel, music, garageband, movies, light photo editing and running school programs like AutoCad and Solidworks. I currently have a black book 13'' so I am used to the screen. Now to me, the 13'' size is very nice. I think a 15'' would be to big and awkward for me to carry around all the time and take on trips and what not so the size is a huge factor. However, i want this computer to last me atleast 3 years so do I really want to pay almost 2000$ (after apple care and taxes) for technology that is not top of the line? This is where I am stuck. Also, If i were to go with the 13'' and updated to 8GB ram would it give me an increase in general performance? Would it be worth it? Thanks a million guys. Edit: One more piece of info, I can afford both so that is not an issue.