Hello guys,
This week I bought 5S, I am already on 2nd charging cycle and this is the result (3G, BT, App refresh - OFF, fetch mail every 30 min., no music during this period):
Sounds about right. I get about 2-3 days standby time with 8-9 hours of usage on my year old iPhone 5. Same with my friend's iPhone5. The trick is to not bog it down with apps