Well, I've had four WD Elements 1TB external drives so far and two have
died on my (USB-to-SATA controller failiure both times. The first was
only my TimeMachine drive, so I just returned it for a new one. The
second I had lots of movies on and no backups, so I had to canibalize
the drive out of the enclosure to rescue the data. The drive was fine,
the controller failed.
These were both the 1st generation "silver" alu cases. Now I have two
2nd generation drives (black) and they have been good so far.
To avoid more stupid failiures I'm getting a Drobo.