In order to test Toshiba's writing quality, we used the LiteOn SOHD-167T and the Plextor PX-712A drives with our usual testing software:

Mitsubishi Chemicals 2.4X @ 5X

Plextor has a better error correction ability than the LiteOn and this is the reason that it managed to complete the test and read the disc.

CMC Magnetics 2.4X @ 2.4X

It seems probably due to its error correction capabilities

- Summary

Although Plextor reported good writing quality for Mitsubishi Chemicals media, the LiteOn drive failed to read the disc. CMC Magnetics didn't produce any problems.