I do not need a bigger screen than 5s. I mean, seriously, 6/6s does not fit my pocket. Plus I really like using a phone with 1 hand, and I can't do it with a 6/6s.Love my 5S, but would prefer a larger screen. The design is fantastic and I prefer it over the 6's. It is running fast on iOS 9. You should be fine if deciding to get it.
I do not care about 3d touch,etc.
I need a good device I can take photos with, I can surf the web and use some apps. Nothing more. (Sadly, my 4s is not suitable for this job by now.)