I have a E. '08 Black MacBook and it's been doing very good, even better since I finally upgraded it to Snow Leopard. Over the years I've only seen very few of them around, so I feel very glad that I decided to buy it rather than the late 2008 unibody MacBook when I had the opportunity. My only complaint is the case shows fingerprints too easily but I'm used to wiping it off... I still like it better than the white though.

And yes, I can confirm that Apple is still replacing the top case on MacBooks. I had a friend that bought a MacBook recently that had cracks around the palm rest and Apple replaced the top case, no questions asked, a few months ago.