I work for a school and we have just built a new 6 bay duplication tower for DVDs using the 812S drives. Our other duplication tower uses Pioneer A05 drives so uses only -R media. To avoid confusion we need to use -R media in our new 812S drives as well. Already we have found some brands don’t work reliably (high number of coasters and failure to complete copying, etc.) with the 812S. The Pioneer drives have little trouble with a wide variety of brands.
I’ve read to recently posted review of the 812S and the -R media the reviewer tested. Would welcome any other input on inexpensive reliable -R media for the 812S.