IMO...based on the fact that I have always used drives by just about every hard drive manufacturer that existed at the time...there is no such thing as a "most reliable hard drive".
In general, any new hard drive manufactured by any of the major players (no rebranded/refurbed drives) has as much chance of performing reliably as any other drive.
Most users develop preferences, just as most of us develop favorite cereals, cars, music, etc...but I've never found any one brand to be superior to any other.
My bias is Seagate, not because it's better...but normally the warranty period may be longer than those for other drives.
Having said that, warranty period is absolutely no consideration today when I buy a drive...that wasn't true in the 90s when I first began playing with personal computers. I believe I only have 1 Seagate drive out of a possible 12 or so.
You might find This Dialogue
enlightening or exasperating.
IMO, the main thing to consider is...the technology is going to change/evolve, with the high possibility that faster/better drives will be on the scene...long before the listed warranty period of any drive comes to pass. It's hard for me to attach any concept connoting "permanence" to computer hardware or O/Ses these days.
IMO, if it goes bad and I want to replace it by following the guidelines for RMA...that's about all that can be expected.
FWIW: The oldest drive I have any useability out of today...dates back to 2002. But I don't use it very often because I have faster/better drives which have evolved since 2002 and I don't plan to ever "need" IDE drives again.
Apologies for being so verbose, it's me