The one thing that would make me upgrade to 5S would be better battery life. It´s all I ask. The battery is horrible in iPhone 5. It was a huge downgrade from iPhone 4´s battery. Even Apple´s own specs shows this. I can no longer be in peace that my battery will last the whole day. I use to have no worry at all. Sometimes I don´t want to even listen to music or browse the web when I´m out, just so that the battery won´t run out on me. So I don´t really get what Apple is doing, I guess thinness wins? But I sincerily hope they will give us more battery life and never downgrade that again!