6 to 7/10
I have one annoying problem which is can't get used to for already 2 weeks.
I don't like home button.
How to say it? Well, "press feel" is not as solid as in my old 4s.
Also it is not flush with front panel, it's a little reccesed and when i press it i feel sharp edges. I read that in US some people had their phones replaced over this, but here where i live (Moscow) i'm sure there is no chance.
My 4s had perfect home button.
Also, i think images taken by 5 are a little darker than those taken by 4S.
It' only noticable when taking picture indoors, evening light, in daytime they're probably on par...