You may be interested in AccurateRip or similar…
Even good drives don’t always produce completely accurate rips, especially if the disc is at all damaged. (Though they normally sound fine—even perfect, but digitally they’re slightly different.)
The basic idea behind AR is that you checksum your rip, and if you and someone else both got the same checksum, it increases the chance it’s right. The more different people who got that checksum, the more likely it is.
Several rippers (incl. morituri and EAC) have AccurateRip support.