Just checked them out in the AS. Definitely going for the Mini 4. It is sooooo amazingly light and super easy to hold and type on. Just awesome. The split screen multitasking seems nice and useful as well. I was surprised at the difference in one hand use between my air and the air 2, but still it wasn't to the point where I could see myself comfortably holding it one handed for long periods of time like I do when I use my textbooks for homeschool. I think the mini 4 will be great for me. And if I get it and use it for a few days and find that it actually doesn't fit my needs (which I doubt), I have the extended return period.