So my 5S is on 7.1.2 because I never heard good things about iOS 8. I was planning to stay on 7.1.2 until 9.0 dropped (or 9.1 perhaps) to see if promised stability/speed improvements materialised. However, I've just encountered my first app that will no longer run on iOS 7 and I'm worried that 9.0 will be an even bigger dud for the 5S than 8.x was. Just wondering if those of you who're on 8.4 would have stayed on 7.1.2 if you had your time again? If 9.0 is a bigger dud I but I don't update now I will eventually have no choice but to skip 8.4 and accept 9.x. Thoughts anyone?