Hello all. So I am torn between the two devices. Currently I have a iPad mini and I really like the device overall. I'm not completely satisfied with it but it's probably the best tablet that I've tried so far. I like the size and weight of it but i'm not completely sold on the screen, the lower resolution does bother me a little bit. Another thing that I wasn't to fond of on the mini was when I went to watch a movie the letterbox seemed to take up almost half the screen. Also at times I notice some lag and/or unrecognized gesture inputs. It's not terrible just not as smooth as I would have liked it. I haven't spent a lot of time playing with a iPad 4, just a few mins in the store and it looked nice but I didn't want to plop down $500 for it, however if it would be noticeably better then I could justify doing it.
What I would mainly use the device for would be to read school books, to watch movies on when I travel, web surfing, skype/face time chat, and e-mail. I'm not a big gamer on tablets.
I've had a hard time finding reviews that go in depth on the use of the mini or iPad 4 for reading textbooks. From what I saw people like the mini because it is lighter and easier to hold for reading, however people liked the iPad 4 for having the better screen and not having to zoom in to read something.