I have the 2.93 unibody 15" and mine is a 7200rpm Hitachi
fyi, all brands are more or less the same
apple uses the manufacturer that gives them the best deal. they dont say only use seagate or western digital
Dude do a search there's tons of threads on this:
http://www.google.com/search?hl=en&q=hard+drive+7200+unibody+site:macrumors.com&btnG=Search
Cheers.
-J.-