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IBM had a huge fiasco with thier high end drives (BTW those IBM drives = WD drives). At the time WD didn't label the high end drives as WD.
Basicaly the expensive 7.2krpm 2-8mb cache models would overheat and in 6month -1.5 years the motor would die. The place I worked exclusivley used IBM drives for the RAIDs; we had cases where 10 drives would die daily. IBM replaced them all (many out of warranty) but the repalcments would also die. Eventualy we switched to Seagate.
Since then IBM has stopped using WD components in their drives and now is partnered with Hitachi. Hitachi is very well known and respected for making high availability disk farms and the like. In other words, they 'should' be very very reliable.
In other words you should not be so afraid of IBM drives today. But IBM has ruined their relationship with many customers by denying that IBM drives had any reliability issues for years and trying to cover it up.
But yes, do make sure to get Fluid Dynamic Bearing motor.
Oh and if you want SCSI like performance without the price, get a SATA Raptor. (Yes they're still expensive as hell)
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