i've got the new 17" i5 MBP and the standard 500gb 5400 drive from the apple store. first i upgraded to the seagate 7200.4. not a nice experience, i hated the vibrations on the palm rest und this humming sound.
then i exchanged it to the hitachi 7k500. now it is really nice, it isn't noisier, hotter or louder than the original hitachi 5k500.b which was built in.
i really can recommend the 7k500. Fast, smooth, quiet.....i guess the best choice of all mechanical hdds......i'm sure i'd like an ssd better, but i'm just not crazy enough to spend a little fortune for 256gb.