I've had my 3 TB Seagate Barracuda HDD for more than 2 years now, no problems or hiccups. I also have a 4TB Seagate external backup drive, I'm not keen on the software but I've accidentally dropped it a few times and it still holds up. I'm not a Seagate fanboy really but I used to have WD's and had failures on those.
In the end I think it's a bit of a lottery. It's like the old wisdom when buying a car, never buy one built on a Monday or Friday, Monday the workers have hangovers, Friday they can't wait to get out of there and are in a rush. Too bad we can't get the day of the week build data on things other than cars huh?