In all honesty, most of the "reliability" posts, reviews, and complaints are very much personal experience from a specific user. It is human nature to complain loudly and thank in silence, which makes research quite difficult some times.
In general, failure rates are quite low across hard drive companies with a few outliers (from each company). Keep in mind that any drive you buy WILL FAIL. Any drive you buy can fail right out of the box, 10 minutes later, or just after you copy all your data on to it.... so backup backup backup!
Once you have your first failure, you will start to build a strong opinion of the company, but until it fails, you will have a growing positive opinion of them, and maybe loyalty after a few years. Humans are fickle like that.
Chose one based on price and performance ( and warranty ) that suites your needs.