Thanks for the feedback, I was expecting that these would be acceptable. I just wanted to decide whether I had reasons to return the burner or not, and looks like it is functioning properly.
How did you know that the Sony was 1X rated ? Are all Sonys like that or is that mentioned somewhere in the k-probe report ?
I will also return the Sony ones, too slow I guess my -RW media is going to be only verbatims, if I need to use them at all.