Thanks for giving us in the forum the information. I do trust this study much more than peoples own experience with archival or BD-R. Same thing with another study that was made on DVD-R and DVD+R discs showed a different scenario as well as this study does.
It would seem that (as I knew) that the only good brands are the falcons and panasonic BluRay discs. And falcon bought everything from TDK and had that shipped to UAE (i think so). Thats why the quality is so good on falcons as it's the old TKD line. More or less.
The big surprise for me was that the panasonics are not that expensive compared to sony, verbatim etc, that in this study has fare worse quality. On the other hand as I shifted to harddrive storage instead of BD-R I can't say that I have burned that many discs.
The best thing for blu-ray would have been a alternative for archiving on LP size BD-R discs. As this would have (not increased storage) but made it possible to add lots more recovery data and all that. Plus better quality. But thats just my thought on storage problems. Like the old laser discs.
If we are going to get 2K and 4K HDTV, plus make old DVDs BluRays etc a manageable storage option (or be able to move it over to new tech) we need to move over to HVD technology, todays BD-R don't hold enough data.
Another drawback is the stupid blu-ray people who didn't include the old DVD standard onto Blu-Ray, if they had done that, a lot of old DVDs could have just been move over to Blu-Ray (so you could have 5-7 dvd movies on on blu-ray) and being able to playback each movie in a virtual dvd, in the blu-ray player). Would save a lot of space, but that didn't happen.
Sorry got a little OT.
Anyway, for people in europe having problems getting media, I find this site to be good. They don't have all the brands but do ship to lots of places.