Version 1.05 has worsened the great burns I used to get with 1.04u on RICOHJPNR01 media (Memorex branded). I used to get PIE averages of < 0.10 and a max of 10 with about 21,000 total, and this was burned at 4X. The few I've done on that media since then have yielded PIE averages of > 0.20 (twice as bad!) with a max of 17 and about 32,000 total.
In summary 1.05 has increased total PIE errors by 50%, maximums by 70%, and averages by 100% on RICOHJPNR01 media. That given, the numbers are still very good. I've never had good results burning this at 8X...
On the other hand, I burned some MCC003 media (Verbatim branded) at 8X, and it seems markedly improved versus 1.04u! The numbers are even better than my RICOHJPNR01 burned at 4X. I used to burn all DVD-VIDEO at 4X on RICOHJPNR01 media because I liked the fact that it burned CLV with no re-linking, however I may need to consider burning 8X on MCC003 or YudenT02 media from now on!