I used to own an iPad Air, back with 7.04 or 7.06 or something, I can't remember... anyways, I sold it because frankly, I thought the performance was poor. Lots of lag and frame skips during the navigation of the OS and applications. I've heard others complain of the same problem... but I've also heard iOS 7.1 is supposed to improve this. Any personal experiences? Does 7.1 really fix things? ...should I buy another Air now? Thanks!