Hm. For FC storage, Seagate is far more experienced, but for desktop environment, failure rates among Seagate, Maxtor, Western Digital, Samsung, Fujitsu, IBM-Hitachi, and others shouldn't be that different. None of them can survive if failure rate of their drives is too high.
Fluid bearing is used in all the big manufacturers.
I'm personally not intersted in buying anything other than Samsung because P120 series HDDs are both the cheapest and best-supported in South Korea.