Got a recertified 250GB from Woot a while back. It lasted a year and then tanked with almost no warning.
Obviously that’s anecdotal evidence. Most of the time I’ve been very happy with the Barracuda hard drives. But hard drives are probably the one item I don’t like to purchased as refurb/recertified, because unlike most solid state electronics, hard drives really do wear out.
Remember folks, hard drives come in two forms: dying and dead.