refurb
We just bought a refurb aluminum MB for my mom and have absolutely no complaints. It arrived quickly and was in perfect condition. I spoke with someone at Apple (1-800-692-7753) and asked about the refurbs prior to ordering. I was told that Apple's goal with the refurb experience is that, if you put a refurb beside a "brand new" product, you should not be able to tell the difference between the two. Further, I was told that if you can tell the difference (ie, if there is any flaw with the refurb) then that is grounds for return.
I will absolutely go the refurb route again... No complaints!
Good luck,
m&c