Does iPhone 5s slow down with iOS 8? I am pondering whether it makes sense to install iOS 8 on my iPhone 5s.  I've seen articles like this, that advise you not to install the new OS on the 4s.

However, I've seen nothing about the 5s experiences.  Those with 5s phones upgraded... did the phone slow down at all?  Was it worth it?
My 5s didn't slow down at all after the upgrade. I did disable a few features that annoyed me (quicktype prediction, spotlight suggestions, etc.) and you may want to if you're concerned about performance, but I didn't notice any speed issues at all. Much, much better than my experience with the beta on an iPod Touch.