the mbp will have a better screen, better battery, card reader, and a bit faster than white macbook, it's up to you..
Exactly, I agree completely and also agree with airplaneman re future-proofing and clyde2801 re refurbs if finance is an issue; with a refurb you get a machine that is new, comes with all of Apple's warranties and has been individually tested and tried.
I have one - a 15" - and I love it; it is easily the best computer I have ever owned. As most of my work world (actually, all of my work worlds) use Word, I have Office for Mac on it and cannot recommend it enough.
Cheers and good luck