I bought my style from a Sprint corporate store when they had the buy one get one free. I got a black one and the wife got the pink/purple one. Hers does not have the Sprint logo but mine does. The boxes and everything else were identical though.
Posted from my CrackBerry at wapforums.crackberry.com
I bought my 9670 on 12/22/10. It is made in Canada and has the Sprint logo on the back.
Battery life was annoying me the first day I had it. If I'm in a building with a steel roof it kills the signal and makes the thing waste power scanning needlessly. After one particular episode where I watched the charge go from about 3/4 to zero in a couple hours, I bought the BatteryBooster app (same developer as MemoryBooster). It can last a full day now.
