I have Maxtor, Hitachi, Seagate, Western Digital and Samsung, yet none of those brands have ever failed me. I will say thoug, I dropped the WD and some piece came off so I RMA'd it and got a new one but other than that?
And yes, I've had IBM HDDs too but that was the infamous Desktar which had a failure rate of 2 out of 3 and in all cases I ended up with one that eventually broke.............therefore stay away from IBM products.
Right now, I'm very satisfied with my Seagates, perpendicular recording and 16MB cache along with a 5 yeard warranty? It's a sweet deal for the price I paid.