Obviously the retina iPads are beautiful for higher resolution photos. But what about lower resolution photos you want to view full screen? Stuff under 1000x1000px. I know you can zoom in, but iOS only allows you to zoom in so far before it rubberbands on you. I'm not sure if that is 100% or just slightly beyond that when it stops you. So it just got me thinking, if I were viewing a bunch of 640x480 photos and I wanted to view them full screen or even slightly zoomed in, would I be better off with a non-retina iPad?