I need a new notebook for work (mostly browsing the internet and LaTeX) and studying, no gaming. My priorities are portability and battery life. The perfect solution would be the MB12, but I'm a bit scared it won't satisfy me performance-wise. I always thought the rMBP 13'' was a lot heavier than the MBA 13'', but only recently found out the newest rMBP 13'' is also really light. However, it does have worse battery life. These are the three models (including AppleCare Protection Plan) I have in mind: MBA 13'': 2.2 GHz i7, 8 GB RAM, 256 SSD, roughly $1600 rMBP 13'': 2.7 GHz i5, 8 GB RAM, 256 SSD, roughly $1650 MB 12'': 1.3 GHz M, 8 GB RAM, 256 SSD, roughly $1700 The biggest disadvantage of the MBA is that it has no retina display. Also, it has no force touch but I don't know how much of a difference it actually makes. How do these three models compare performance-wise? Is the rMBP still better than the MBA? If so, what kind of applications can I expect to not run smoothly or at all on the MBA but perfectly fine on the rMBP? Also, I've read a lot of reviews on the MB12 but since I'm no Mac user yet (only iPhone/iPad), I don't really know exactly how bad it is performance-wise. Could someone maybe compare it to the two above listed models as well? In numbers (1.3 GHz) it looks really really bad, however it's also around the same price range for me and obviously would be perfect for me if it wasn't for the performance drop. What common applications can't I run on the MB12 or don't run smoothly? I always read that I can't do proper video/photo editing, but those are things I'm not particularly interested in. What about e.g. Logic? Will LaTeX compile easily while I have several tabs open in Safari or will it start to become slower already?