Pros: - Runs quiet and cool - Drive is ACTUALLY 320 gigs of free space, not 304ish - Doesn't click like those silly WD's :)

Cons: - None as of yet.

Overall Review: Bought this to replace my 160gig macbook unibody (late 2008) stock drive. Originally bought the highly touted Scorpio Blue for the replacement but that thing started clicking within a week or so. Decided to try one of these things and have not been disappointed. Runs like a charm, no difference in battery life noticed and best of all no blasted clicking :)