This disc was delivered in version "bulk" (bulk), but immaculately protected and packaged. It was not pre-formatted (so I had to initialize and format using the Windows Disk Manager 8.1 before it is recognized as an external drive).
No problem so far, although it tends to heat up slightly at full load (eg when creating a disk image for +/- 10 min)
+: Good price / performance ratio / capacity
-: Delivered in bulk unformatted