I would not say that the Sony is better, it is an older vintage than the ASUS. If you were comparing 2 52x drives, the LiteOn would be a clear winner. I would rest them both in your system using the same media, or a variety of the same media, and keep the one that has the lowest error rates. If there is no clear winner in the error rates, keep the ASUS because it's able to read and rip very fast. In terms of reading protections, they are much the same, although the sony might need to be flashed to LiteOn firmware for the best performance.