I can't tell you that numbers don't mean much, because I'm not entirely sure what they mean, but from what I've read, the Samsung Spinpoint F1s are faster in real world application.

There was an in depth review of 32 HDDs in CustomPC this month, the Raptor 150GB scored 72% while the F1 750GB scored 95%. In benchmarking, the F1 was on par with the Raptor on most of the tests.

However, I don't know enough about HDDs to tell you what to get, decide for yourself .