The French study from 2012 testing several BD-R’s found that Panasonic MEI-T02-001 had the best longevity. The discs tested were SL. However, there’s also a DL disc with the same mediacode, MEI-T02-001.
What does this mean? Do manufacturers use the same mediacodes on different products that would perform differently? Or is it a sign that the DL should perform the same as the tested SL with the same mediacode?
Or, even if the DL MEI-T02-001 isn’t the same as the SL MEI-T02-001, would the DL MEI-T02-001 still be good because it’s still Panasonic?