I use WD Blacks, Gold, RE's and Ultrastars. The last 3 are the same family of drives with branding name changes.
Basic calculation in my head of the numbers I own.
Maybe 5 WD Blacks
4 WD Ultrastars
5 WD RE's
At least 2 WD Gold's.
None of the above have every failed, or given any issues. My drives are used in Silverstone FT-02 cases (own a number of these cases, great for servers & workstations), and I have 180mm fan running slow speed directly under the HDD's. I personally believe that getting some air over a HDD helps it's reliability.
Before anyone says I should stop using HDD's and get SSD's, I own quite a number of SSD's also, and ironically it's been SSD's that have failed / lost data, and not the HDD's.