I've been thinking of getting an iPad 5, but I would also like to keep it for at least two years. I've heard that when a new iOS update comes out, it can sometimes cause some older iPads to become sluggish. Which updates slow it down? For example, for the 5th gen, would I have to worry about any of the 7.x updates causing slow down, or would it really not be something to worry about until iOS 8 comes out? Also, if you choose not to update, how often do you get that annoying reminder to do it? Sorry for the silly question; I am just not one who likes to upgrade their tech all that often. I'd rather have an older OS version that runs quickly than have the latest and greatest but have it be sluggish.