I just got the 2010 white macbook and I think the screen is fantastic. In the store, it was displayed adjacent to the 13" pro and they both looked great. I think the pro has an extra layer of glass, or a different layer, since its colors did seem a bit "richer"- I'm not a display techie. The pro also appeared to be more reflective which isn't a plus in my opinion but not a huge difference.
I went with the macbook because the pro was out of stock and, being impulsive, I justified the purchase because I saved a bit of money.