I just received an iPad 2 as a gift last week. I am loving it so far; however, I've noticed that since I've had it that I've been getting frequent headaches, especially when reading on the screen. I checked out the iPad mini and iPad 4 a couple of days ago at Best Buy. I love the size of the mini (I also have a Nexus 7), and really liked the screen resolution of the iPad 4. I can return the iPad 2 to Walmart (my son works there-he's the one that bought the iPad 2 for me) and exchange it for either the mini or iPad 4 and receive a 10% discount; however, I really don't have the extra money to put with buying the 4; I would get some money back if I got the Mini, but I'm hesitant on getting that one because, wouldn't that be considered a downgrade from the iPad 2? I would be worried that the Mini would give me a headache, even though the screen is smaller. For those who have gone from having an iPad 2 to the iPad Mini, do you notice a difference in the screen resolution? Does it seem more easy on the eyes (although they both have the same resolution)? I like the size of the Mini a lot but it may be redundant to get it since I already have a Nexus 7, which I plan on keeping. Or, is it worth springing the extra $140.00 after returning the iPad 2 and get a iPad 4?