Well this has probably swung it for me - this and the poorer colour range. http://www.cultofmac.com/254489/retina-ipad-minis-experiencing-image-retention-display-issues/ And I've done the test and after 3 minutes, my rMini suffered image retention. What a shame. Now we know why the Mini is cheaper than the Air - the screen is just not as good quality. So looks like my Air stays and the rMini goes back.