LG DVD-R 16x [8x]
The diagram for the LG DVD-R disc shows an eye-pleasing picture. The maximums of errors are within the ECMA norms. The errors are also very evenly distributed along the surface of the disc.
Philips DVD-R 16x [4x]
The burn quality of the Philips DVD-R disc is satisfactory. It meets the ECMA requirements, but I don’t like the high level of PI Errors at the beginning of the disc.
TDK DVD-R 16x [8x]
The TDK DVD-R diagram looks good to me. The levels of errors of both types are low. The errors are evenly distributed along the surface of the disc. ECMA would surely like this disc.
Philips DVD+RW 8x [3x]
Alas, this Philips DVD+RW is low quality. Errors of both types exceed the allowable limits. The optical drive may have problems working with this disc.