I’m not sure if I should be blaming the media or the drive (or my system) in this case:
I burn Verbatim MCC 004 (made in Taiwan) discs at 12x and get a quality score of around 30-something because of 1 or 2 relatively high PIF spikes with otherwise no PI failures at all. In one case I had a burn that would have had a 100% quality score (measured on my BTC 1008, repeat scans are consistent) except for a single PIF spike. The spikes are not always in the same position on the disc. This pattern of either high spikes or no PI failures at all is consistent throughout the MCC 004 discs I’ve burned so far.
My old BTC could not produce burns with anywhere near as low a total PIF score, yet it seldom had spikes go as high as with the 4163B (hence, quality scores w/BTC 1008 were often better than with 4163B).
4163B is master on secondary IDE (BTC is slave on secondary IDE). Athlon XP 2800 Barton, Nero 22.214.171.124