Works from day 1 as i had the "chance" to have bad originals I wanted to backup.
Since then, no bad sectors on the discs I burnt...Should I start to worry
The question is not meaningless though. As the reading capability is above average, this drive reports less bad sectors than average readers would.
A workaround is to do quality scans at maximum speed or the highest speed commensurate with the quality of the media.