I am looking for advice from a technician who is experienced in diagnosing hard drive issues. I need to know the best hard drive testing software available. I have used tools that read SMART information, and tell me the drive is okay, but everytime I run scandisk, problems are found on the drive, indicating to me, that the drive does have issues that are going undetected. I need something quick, reliable, and accurate. I have run into issues where I have tested customers' drives with previous tools and the drive comes up okay, only to have the customer return in a few days with problems related to a failing hard drive.
I would like an answer from someone who knows what they are talking about, and not just some shotgun answer of "Try these 19 programs, maybe one is good." I want to know what other techs trust and relying on.