[ambiate]

I will be sticking with my Nexus 4. I do not utilize the camera too much. KitKat will come to the Nexus 4 in time. The price is the really questionable point.

[Sargos]

The Nexus 5 is just about the same physical size as the Nexus 4. The bezels are much smaller to accommodate the screen.

[corresation]

The doubling of screen resolution is what has inspired my update, not to mention the ridiculously powerful CPU/GPU.