You misunderstood; I was saying that Seagate being a big company was an argument
in favor of them, but that my personal bad experiences overrode that:That said, as far as hard drives go, Seagate IS a huge company when it comes to rotating magnetic media; they shipped more hard drives than anybody else (though WD is close behind) last quarter:
http://www.digitimes.com/news/a20100323PR200.html
Sure, Samsung and Hitachi are probably 50 times the size of either, but the hard drive division of either is much smaller, which is all that really counts--we're talking about massive multi-sub-company conglomerates here, and it doesn't matter how many washing machines they make. Samsung's drive division is about a third the size of Seagate or WD, and Hitachi about half.
And you're absolutely correct that the only definite way to tell drive reliability is from a large sample; the StorageReview.com survey was the only worthwhile place to get such a thing, but sadly hasn't been hyped/maintained enough to have a good sample size on newer drives. That said, some problems are universal--the unsynchronized sleep on WD GP drives, for example (though many won't notice), and the weird Seagate stalls I saw on my 100GB 7200 2.5" are, I think, also due to the firmware not an isolated issue. And while I only care for 3 or 4 dozen drives, which isn't a statistically significant sample, I've had two Seagate catastrophic failures without warning, and needed to return two more brand new ones due to read errors, a failure rate of about 50%; I've only lost one WD out of about a dozen, and that was a slow failure that I had time to order a replacement on.
Incidentally, both Seagate and WD's warranty service is fine if something does go bad, though Seagate's was easier to deal with.