ive owned quite a few hitachi drives...honestly only WD drives i own are in my laptop, and now ill be booting off a WD Blue, replacing my 3 year old Hitachi Sata 1 Drive when i change out my motherboard and ram, ive found their drives pretty reliable, only lost 1 drive in the 5 years i have worked on computers...they replaced it and now i have it running in a clients machine along with another 500 gig hitachi, in a raid 1 just to be certain if it does bust, i can replace and get him rolling without any downtime, or at least data loss. but the sata 1 hitachi im replacing is not unreliable, just some of the data coming from the drive says its reaching some undesirable limits, its power on hours count exceeded the average limits according to speedfan...but im not really concerned about the drive failing, it has no bad sectors or anything alarming.