For a fast drive, WD Black are good, so are the Samsung Spinpint drives
You are correct about the hard drive failure tests, https
Good info there.
In case anyone is wondering, Hitachi is the same company as HGST (Hitachi Global Storage Technologies) and HGST is owned by Western Digital.
One reason why I believe Hitachi/HGST is so good in general is because Hitachi incorporated IBM's HDD business (Hitachi bought IBM HDD) and we all know IBM makes or used to make good products (think Lenovo Business laptops).
Also, WD Blue's do actually spin at 7200rpm (I'm looking at the 500gb and 1tb models). Here is the WD 1TB Blue: http/www.amazon.com/Blue-Desktop-Hard-Disk-Drive/dp/B0088PUEPK/ref=sr_1_2?s=pc&ie=UTF8&qid=1452530474&sr=1-2&refinements=p_89%3AWestern+Digital
Here's a WD 2TB Black: http
/www.amazon.com/Black-Performance-Desktop-Hard-Drive/dp/B00FJRS628/ref=sr_1_14?s=pc&ie=UTF8&qid=1452530474&sr=1-14&refinements=p_89%3AWestern+Digital. (I own this model personally)
Here's the Hitachi 2TB HDD seen in the review: http
If you are buying an HGST HDD and want to match it to the study, make sure you look at the product number. The one in the study was HDS722020ALA330.
Here's the 3TB Hitachi version seen in the study: http
/www.amazon.com/HGST-Deskstar-3-5-Inch-Internal-0S03660/dp/B00HHAJU7K/ref=sr_1_2?s=pc&ie=UTF8&qid=1452531287&sr=1-2&keywords=HDS723030ALA640. Coincidentally, that particular listing shows the other 3TB+ sizes sold directly by Amazon, rather than having Amazon as a reseller.
If you're thinking about buying a 1TB HDD, I would go with WD Blue. If you're thinking about 2TB - go with WD Black or Hitachi/HGST. If you're thinking about 3TB+, go with Hitachi/HGST.
Another couple things to remember. For HGST's, make sure you get the Deskstar version (this is the consumer version). For WD's, make sure you get Blue or Black. Green is really only useful as a backup hdd and the other colors are for things like surveillance cameras and servers.