I have a white one but keep it in a black Switcheasy Capsul Rebel case...Haha
HAHA, I have the white as well in a white Switcheasy Capsul Rebel Case. Excellent case for the iPhone.
Guy I work with has a white as well (naked) all scuffed and marked up. Unless you are super careful I would def get a case for it. I never have a problem taking my phone out of the case to show it off (looking brand spanking new).
You can't go wrong with either color though, it is a matter of preference. Nobody that I know has a black one (go figure).