The Macbook Pro is a professional machine... the MacBook is consumer. They will both run the same software. If your needs lean toward Pro work, get the MBP. I have a MBP. My daughter has an older iBook in the MacBook format. It also runs the same software (but it's not Intel). I prefer my MBP. Check the refurbs at the Apple store online... you can often pickup a MBP for $300 less than a non-refurb and both come with the same factory warranty.
Thing is, what’s pushing me towards the MBP is build quality. I like the aluminum case, and especially like the metal keyboard. (My current Inspiron 6000 has a shoddy plastic keyboard, and the lettering on half the keys has worn off because they were decals.) I’m quite wary of the standard MacBook for those reasons, even though I know it’s a solid machine.
I suppose I’ll hold off until both products receive updates, then go from there.