I don't think the rev of a MacBook is what decides how good the screen is, because Apple gets screens from a few different manufacturers, and some just look better than others.
I have a Late 2007 Santa Rosa MacBook, and the screen looks really good (for a MacBook), because I have an LG/Phillips display, which are supposedly the best, while Samsungs are supposedly the worst.
This thread explains more about it, and how you can find out which display your MacBook has.