Ok, I have spoken to a buyer for a local DVD duping company and they have confirmed that the TY media we are looking at is called their Value Line product and is not the same as their Premium grade. This means there is a higher percentage of block errors. He also said it had been certified by his company as 4X media. He said it was not "B" grade but definitely not as good as their best. So the general concerns about this being “too good” are true but also it is good enough for TY to put their name on as 4X. This explains why some of what we are getting is G02. I am still very happy with the price and the quality and I have seen a better burn at 8X than many other premium media, Verbatim included. So I guess you would burn at 4X if you want the best quality. If you like the scans at 8X, as I do, it still beats the competition.