Okay so I'm looking to get my first iPad and money is kind of tight. I'm just wondering what the benefits are of getting the iPad Air over the iPad 4 (previous gen)? I know the big difference is the 64bit chip so maybe that would "future proof" me a little. But what other major differences would their be? For those who had a 4th gen iPad and upgraded to the Air what was your reason? Also would it be beneficial to get the Cellular model? To my understanding cellular is month to month with no contract. I would just like to be able to use my iPad anywhere without having to be near a "hot spot". Also I do like the Retina iPad mini but it seems like this whole colour issue is a big deal. I did notice when testing out the rMini that it wasn't as bright as the Air. Any thoughts?