For those that have used iOS 9, is it TRULY faster and smoother than iOS 8? I supposed a better question would be, did you notice animation glitches and choppiness in 8 that you don't see in 9? I have been generally unsatisfied with iPhone/iOS performance since iPhone 5/iOS 6. iOS 7 & 8 have had choppy animations and a handful of WTF moments. In fact, I bought a iPad Air 2 because the iPad Air was too choppy for me. I currently have an iPhone 6 & iPad Air 2. I'm considering selling my 6 and getting a 6s, but that means upgrading my Air 2 to iOS 9. I also might just keep my 6 and go to iOS 9 or stay on 8.