Thanks, Ian, for your interest.
Ok. I understand that this media was burned with 7260S and readed with a Benq DW1640. Hence, tomorrow will buy the Optiarc nearest to my home (7260S). The only thing I can say about his DVD+R DL results, is that seems to be slower than 7240S, but that question is not very important to me while the quality of burnings may be high.
I am actually a newbie in this area, but there is always time to start a hobby
. What reader (independent of writer) can you suggest me for my future tests? (if possible not difficult to buy now)