I have the black. The reasons being:
- When running apps that are not updated for the 5, the cut off on the top and bottom of the screen is much less noticeable with the black.
- I like the daarker color scheme of the back much more than the white
- Even though there are reports of it scratching more easily, I like the black antenna band. This is what I was hoping for from the iPhone 4 and 4s. Also, when sitting both a black and white face up on a table, this is the only thing that makes an iPhone 5 easily discernible from a 4/4s at a quick glance.