I am looking into getting a Macbook Pro with retina display and I am undecided. I am looking for a computer to last me for many years, one that is portable, and durable. I don't do any heavy graphics work, creation, or audio work. I do store a lot of pictures, but no more than your average person. I don't play any intense computer games, I will mostly be using it for internet research, writing presentations, checking email etc. Occasionally, I use photoshop, but not many other programs. I'm not sure whether to get the 13-inch or 15 inch, or within those sizes if I should upgrade to the more powerful versions with more memory. Does anyone have any suggestions?