I don't use any graphic programs such as coding or photoshop. I won't be playing any games on my laptop either. Mainly used for emails, web browsing, researching, and watching videos. I understand the price difference and spec difference between the 13inch retina vs the 15 inch retina. For my uses, which do you think would be better? I like the bigger screen on the 15, but i like the smaller form on the 13. Can't decide.