There's no difference between the two besides color right? Then why is it that Black is $200 more??? What do you guys prefer? I like the look of the black, but white is more unique. This is a hard decision 
Just go with your personal preference. I personally like black, so I went with black. Don't let the $125 make the decision for you.
Sorry blackbook owners, but there is no way you can justify your purchase. Sure there are the minimal excuses...
it is all personal, but for me when I bring a laptop to a client sight, the White macbook makes me feel and I believe look, like a student or consumer. That might just be because for the lonest time consumer macs where white (or brightly colored), while pro macs were silver. But regardless I feel more professional with a sliver computer or at least black one. But that may just be me.