I used the black pearl for about three weeks and today I went to my local t-mobile store and exchanged for a white one.
I think the big difference is the keypad. The white pearl keypad is really smooth, less rubberish feel. It could be different material, I'm not sure. But it is very obvious the white pearl keypad is brighter compare to the black pearl when the background LED is on.
All the accessories are white and the headset that comes with white pearl has two ear buds, the black pearl has one.
And yes, you don't really see finger prints.
So overall, I like the white one better although some people think they are girly