320GB 2.5" Hitachi Travelstar 5K320 5400RPM SATA Notebook Drive with 8MB Cache for MacBook?

[Black Landlord]

I have one of these in my macbook, and I -love- it, even though I've always had a negative impression of WD drives in the past.
http://www.amazon.com/Western-Digital-Sc...B0011U65F2

My macbook is black though, so this may not apply to your white one :-)