My original 3G was white after seeing the fingerprints on the black in store. I also thought white was more exclusive (only came in 16gb) and looked a lot cleaner and unique. I sold it, got a Bold and then went back to an iPhone. I got black that time. Then sold it when the 3GS came and got white again. Never again will I go with the black (unless it's the only color left).
white > black
white > black