I went into the Apple store all prepared to buy a Pro, but the salesman talked me down to a White MacBook (October of 2010).
I don't have anything that needs firewire and don't own anything that takes SD cards. I was mainly interested in the backlit keyboard since I use it in a dark room mostly and the 4GB of memory.
He suggested, and after use I'm inclined to agree, that the white keys lit from the screen are easier to se than the backlit black keys, and for the $200 in price difference, I could upgrade to 8GB RAM from a second party vendor (he even gave me the # to an authorized Apple repair center in town that would do the upgrade for me so that my warranty would remain intact)
I now have a white MacBook that does everything I could ever want and more that's faster than a MBP and still saves about $20.
I scratched the polycarbonate cover the first week I had it and returned to get a neoprene slip case. Otherwise, I actually prefer the non skid surface on the bottom to the little "feet" that the aluminum bodies have.
I'd sure love to have one of the 11" Airs though.