The last thing you could bash about the ipad is the screen. Don't see what more you could want from it?
Which air or the mini retina? they aren't the same and even when comparing an iPad Air to an iPad Air, they are not all the same, you have to deal with Apple's display panel lottery (blueish whites, yellow tint, book spine shadows, blue halos, etc). Apple uses more than one source for parts/displays.