I'm getting a Macbook Pro and I'm not sure which one to get. It will not be my primary machine as I have a custom built i7 Win7 rig so I will be using it when I want to use mac software and when I'm out and about. The 17" is ruled out because of portability and cost and so is the i7 15" becasue of cost. I'm not sure if I should get the 13" 2.4, 13 2.66 or the 15 i5. I'm a web designer so I will be using most of adobe CS5 (Dw,Ps,Ai mainly). Will the resolution on the 13" be good enough? Will I notice a difference between the 2.66 and the 2.4?