A lot of people's bias towards particular brands is baseless. For example; say I bought a Samsung drive because I'd read reviews saying they were really quiet (which I did), and say this Samsung drive has been abused for over 2 years with no issues (it has). Because of that, I would build up a trust in Samsung drives and would be more likely to buy them.
In general, HDDs are HDDs. Just get the fastest/biggest/whatever you're looking for-est you can.