I upgraded a half dozen 5S's this weekend to iOS9 with no issues yet to speak of. What broke on yours exactly? I only had one issue with an older iPad 2 that barely had enough free space to download the update (LOL).
IME and O though, most people could benefit from a clean install of iOS9 instead of layering over what's already there.
I am tired of Apple's trying to bully me into buying their new equipment by breaking the equipment I already bought from them, (iPhone 5s & iMac), through the introduction of IOS9. My question is What phones compete with iPhones in functionality, and can access my iTunes archive, (tunes I own but did not buy from Apple)? While I'm at it Does anyone know of a good music archiving system that is NOT iTunes?