I just ordered three of these from directron with a coupon for a Hardware Raid 5 array. They're faster than the Seagate 7200.10s in transfer rate, and destroy them in multithreaded read/writes and IO performance, as Seagate has terrible firmware on their drives. Samsung drives have fast transfer rates, but their multithreaded IO performance isn't so hot, and I do not trust Samsung drives. I've seen too many of them fail at the shop I work at.
These drives also are the first WD drives to have a head-parking feature; the only other manufacturer with this feature is hitachi. They also have a pre-emptive wear leveling feature.