Sony DVD-R 16x
There can’t be any complaints about the quality of this Sony DVD-R. There’s a low level of errors of both types, and the errors are also uniformly distributed along the disc.
TDK DVD-R 16x
The quality of this DVD-R disc is satisfactory. There’s a single spike of PI Failures above the allowable maximum, but the overall quality is acceptable.
Philips DVD-R 16x
The maximums of errors are not only within the ECMA limits but much lower than them. You should also note how evenly the errors are distributed along the disc surface.
Verbatim DVD-R 16x
I had to digress from our test methodology to check the quality of this disc. Nero CD-DVD Speed would report that the drive didn’t support that function, which was nonsense. I then tried to use the previous version of the utility (4.51.1) and it did everything right. The disc proved to be of excellent quality, fully compliant with the ECMA norms. It also has a very low level of PI Failures and a very small total of them.