Opinions...

Black covers a lot of sins and looks good to. My favorite. But if your able to spend the time to keep the white clean, it really POPS! That's on the looks department.
Do you have AC? It's hard to drive a car with black interior in the summer. Let's face it, 93 degrees and black interior don't go together. When it gets hot, you look for reasons NOT to go crusing if it is going to be a sweaty affair.
Just thinking out loud.