Ok I am really hoping for some helpful advice because I am so torn. Needs of System: College (Computer Science Major) Run Parallels with Windows 8.1 on a daily basis Mild use of Photoshop CC Needs to be able to drive 30in Cinema Display at work The lighter the better because it will travel from home to school to work almost daily Would like best battery These are the configs I am debating between. MBPr 13 i7 2.8/16GB/1TB MBPr 15 i7 2.3/16/512 When I looked at both of these in person I absolutely loved the size and form of the 13in. I really want a light system because it goes everywhere with me. I currently have a 15in MBP and it is very cumbersome to take with me everywhere. My concern is that I really need the power of the 15in. Do you think the power of the 13 I configured would be enough to last the next 3-5 years with the tasks I described. Thank you I hope you help me decide.