I've had good luck with Maxtor. I've had something like 5 Western Digital drives die on me over the past 3 years or so. One of them, even a warranty replacement. I used to run them all the time without problems, but the Caviar drives seem to fail on me a lot, some just outside the warranty period. I'm no longer a customer.
i had read about the perpendicular recording technology a year or so ago. Seems like a great concept.