I have been researching hard disks for some time now since I experienced two failures. One WDC and the other Seagate so its not vendor specific.
Both disks had logic board problems.
Now more recently I have begin to see more problems with the eco-green seriers of lower cost high capacity disks that seem to be flooding the market.
At present I do not have any such disk, but I was considering one for my web server as general storage, not as the primary.
For my chess site, I was considering a 2 TB disk to offer downloads. Databases called tablebases are used with chess programs to provide lookup tables for end game positions.
The problem is I need to have a disk that could potentially see more than 5 years of service seeding the tablebase torrents.