Hi. I'm looking at getting a new iPad for my husband. He uses his current iPad 1 about 75% of the time for ArtRage and other painting apps. I'm wondering if anyone has suggestions/experiences about which iPad would be best? Price is not really a consideration, since it seems the iPad 4 and iPad Air 2 are about the same price. I would like to get him the one which would provide the best files for print-making (through Fine Art America etc.). Any feedback is much appreciated. Thanks in advance!