Hello, I will try to make this as concise as possible. I am essentially a rookie with computers, (especially mac) however I plan to learn all required tech skills to be able to produce my own music as well as create & edit my own videos. I will be starting off with video editing & will be creating music videos as well as educational videos and mini skit videos likely to be placed on places like youtube which would range between 3-10 mins each. Eventually I want to move into the music producing aspect meaning I will need a computer that is capable of sustaining both tasks with no difficulty. Now my inquiry regarding the 13" & 15" comparison is as follows... Is video editing of the nature I have described recommended for a 13" screen? I have heard it is not good to do video editing on a screen so small however, once again I am not trying to make feature length films... At the same time will have a 15" monitor really make that much difference? (read second last paragraph before answering) I will not want to have to buy another computer for at least 3-4 years after picking one of these up... a 13" dual core processor with 2.3GHz processor will not be good for as long as a 15" Quad core with a 2.0GhZ + processor especially if software requirements keep increasing which in the future they most certainly will (correct me if I'm wrong as this is merely an assumption)... If true how long do you think each laptop will be able to keep up for? I will be doing minor things with photo shop here & there as well, I definitely need to be able to photo edit & video edit on the go if I am to hope to improve & learn fast enough to become truly skilled in learning the tricks of each trade. I know I can use an external monitor for when I'm home if I have a 13" but seeing as I will be using it on the move a lot, this is an important factor in my decision which again ties into the first point made. Please if anyone has knowledge that or points that could be useful to help me figure out which machine I should aim to pick up please post & your assistance will be GREATLY appreciated.