Business student here, and I'll need a notebook which will last for 3-4 years during my studies. I've narrowed down my choices to MBA 13", rMBP 13" and rMBP 15". I'm more inclined towards rMBP 13". Reasons are: 1. MBA is great with 12h battery life, portability and price, but the non-inclusion of a retina display (or at least 1080p) puts me off. If next year Apple releases retina display on MBA then I might feel crappy. Not future-proof. 2. rMBP 15" is the strongest laptop of the three, but the price is a bit too high. I have enough budget to cover it, but I have a feeling that the quad core chip and HD 5200 might be a little too overkill for me. My usage is mild with some casual gaming here and there, pages + itunes + safari + iphoto + imovie will cover most of my needs. Also, the 15" screen, whilst being great when watching films, is a tad large (not too sure if I'll feel comfortable in class, when carrying or when travelling). What do you think? In addition, do you think I should get an iPad instead (and get an iMac at home?