I've mostly had experience with WD drives in most of my computers. From my experience, they have been very reliable.
With regards to WD, my work has a NAS which had paired WD Green drives since 2009 in RAID 1, they lasted 4 1/2 years before one failed (the other kept running), we replaced them both with WD Red drives. Can't fault WD there, lasted way beyond warranty in a heavy-usage scenario.
On the other hand, my boss got a new Dell last January. They put in a Seagate instead of a WD; it lasted 3 months before it failed. When it failed, the PC unexpectedly rebooted and the drive wouldn't even detect in the BIOS. Dell replaced it, I think with another Seagate, which has been working fine since then.