Hello guys, I have a cMBP 15inch 2011 and because of the screen and the hard drive i want to replace it with something faster and more portable. And certainly something that will last me for at least 4 years. I mainly use my mac for extended typing and reading, browsing, viewing youtube, movies and rarely for lightroom 5. I am considering the MB retina but i am concerned with the screen size. When i study i always have two pages documents open side by side and i noticed in my recent visit at the apple store that you are not able to do that on a MB unless you use the "more space" setting for the display resolution. Furthermore, i am concerned that the move from 15inch to 12inch will be too radical but on the other hand my other choice is the 13inch RMBP which only an inch larger. Is that inch really noticeable ? Does it make a difference when watching movies or typing and studying? Lastly the MB does not seem that its able to last for 4 years mainly due to the 8gb but its very thin and light. On the RMBP at least you can upgrade the ram to 16gb and be more "future proof" or help the system run smoother in the near future. Final note: I dont mind about the lack of ports, at all i never use them anyway. Also i like the new keyboard on MB Thank you for you help!!!