Will probably get the 5C for my wife with the case.
Holding on the slate 5S and sticking with my GS4 for a little longer. My GS4 is a nice phone, but I don't love it like my 4S and iPhone 5. If it continues to do silly, annoying, unintended android like things, I'll probably get the 5S before year's end.
Samsung is supposed to get 4.3 done in October. If they prove they aren't inept and get an update done sorta timely, that will go a long way with placating me.
Just curious, have you no interest in Nexus? Aside from the soft keys, I feel like it'd be a better phone for you.