Great to know… ahaha my 2007 WD5000AAKS is still running almost as new too… you have very good well made drives…
Exchange sata cables (if you have cheap.cables on your pc) i ve had cables with one year making me going to a pc repair shop thibking it was chipset on motherboatd dying
and install windows 7, run hard disk sentinel and see how is the health
Post on tinypic and let us see
If they are good you will only need to upgrade if you want ssd and get the oldies for bulk storage