Pros: Most affordable drive in terms of $/GB.

Cons: Hard drive started to make clicking noise a few hours after installation. A few hours later, it stopped working altogether. Warranty period determined by typing the drive's serial number into Seagate's warranty validation online tool was four months short of the advertised three year period.

Pros: Straightforward RMA procedure from Western Digital.

Cons: Drive started to report SMART errors after approximately four months of use in a computer powered on 24x7. Drive was set to spin down after 1 minute with no activity. Requested warranty service from Western Digital. Replacement drive seems to work correctly, after 10 days of use.

Overall Review: Shipping costs to return failed drive are not paid by Western Digital.