Sony is well known for its products and its quality. We have used more of the sony products then any other products till now and never had complain for the same.
I need a backup for my over populated and slowed down laptop and was searching for good HD. We went to nearby vijay sales and asked for couple of HD and was able to find Sony 500GB enough for my backup needs. After looking for the features and warranty ordered online which gave me additional discount which added cherry on cake for me.
I would recommend the sony HD as it has multiple features like Password protected and also got extended warranty & cover for free when bought online.