If I purchase an iPad Air 1 now, will it last me the next 2 years, in terms of running well? I've looked at both the Air 1 and Air 2. While I like the design of the Air 2, I checked the vibration issue that some people found problematic and I think it might be a big annoyance to me (I know not everyone finds it an issue and that it's a matter of personal preference). When I tested it out, I found the level of vibrating on the back of the unit and the screen concerning for me (in terms of whether I'd find it annoying). That being said, I of course want whatever I purchase to function well. Right now I'm using an iPad Mini 1 running iOS 8, but would like a full sized iPad. Realistically, if I purchase an Air 1 will it function well for the next two years? I don't think my standards are as high as some; for example, I find the Mini 1 to be usable, though I've of course started to notice some lag, particularly when opening up certain apps (takes longer to fully load). But, I also don't want to be naive and end up purchasing something that will be too frustrating to use in a year. Thanks, folks!