That might work, but OEM parts aren't covered by the same warranties as retail drives. I had the same problem with a Seagate drive way back in the day in a PowerMac. Same dang model number was still being sold everywhere with a 5 year warranty, but AppleCare's 1 year warranty had expired, and Seagate told me to suck it. No warranty other than from the OEM. They know the serial numbers.
It is anecdotal, but I buy a LOT of drives as a video editor. I eat them like pills at work.
My failure rate on Seagates is MILES above all the others. Hitachi has also been bad, but my sample size there is so small I can't really comment (I might have just gotten a couple bad seeds). And of course the old DeathStar drives were bad but that was eons ago.
My Samsung drives have been great.
My WD drives have been great.
That's not to say I've never had them fail, but I haven't had the old "fail, RMA, works for two months, fails, RMA, works for three months, fails, out of warranty game" with them.
Google's big drive analysis documents don't seem to back that up. Of course, when you buy in those kind of numbers, you might not get the same "stock" from Hitachi and Seagate that you or I do. Who knows?
As far as waiting or not: are you saying I shouldn't wait because you think my existing drive is in the process of kicking the bucket in slomo, or because the WD Caviar Black 2TB won't come down further than that?
Definitely because I'd be extremely skeptical of the drive at this point. Prices will ALWAYS come down further. The prices have already fallen a TON in just the past two weeks. We're now back at the same inventory levels "in the channel" that we had pre-flood. Prices will continue to fall. They're just trying to eek out that last little bit of these nice high profit margins. Did you notice how there was a terrible flood, factories got destroyed, and then suddenly WD and Seagate both posted record profits and started buying companies left and right? Yeah, I noticed.
Anyhow, the games up, and the prices are dropping now.
But, is it worth $35 to risk losing all that data? Years of eating hard drives like candy has beat one truth into my skull. If it starts acting funny, at all, in a way you can't explain fully, TAKE ACTION NOW! Not tomorrow, not next week, but NOW. Yesterday if you can manage it.
That, and, if it doesn't exist in at least two places, it doesn't exist at all.