After i got the iPad Air 2 i was very happy with my new device. Its the 128GB with sim card. I still own my iPad Air 1 so i started to make some experiments. After i saw that the iPhone 6 Plus with 128Gb use inferior TLC nand i told myself check your new pad and i was shocked to see its also TLC. At first i told myself its sure not a big diffrence. So i took a video file that is 1700MB big and installed it via itunes. The iPad Air one transfered the file in 47 Seconds. The iPad Air 2 use 58 Seconds. Than i used a file that is 450MB big. This one took one the Air 14 seconds. On the Air 2 18 Seconds. So without any doubt the used nand is slower. Im very very disapointet by Apple. And the most ridiculous thing is that the ones that have buyed the 16gb version of the iPad Air 2 got the better MLC nand. We that payed a premium price are the loosers. And the best is Apple is planning to put in future I pads the better MLC again. We the early buyers are the loosers. Since the iPhone 3GS I bought every apple product. I'm guessing it's time to quit.