I'm in the minority, I do not want a screen that's so big I need two hands to use it. I'm happy with my 4S, where my thumb reaches all corners of the screen just fine, where I can reach all hard buttons without over stretching, all whilst holding the phone securely. The above won't be possible with the next iPhone, either with a 4.7 or 5.5 inch display. So I need to consider a 5C or 5S as my next device. What would you go for and why?