They tested their current 16x DVD recordable media, both DVD-R and DVD+R. The DVD-R disc were made by Ritek while the DVD+R disc were made by RICOH. Yay for the -R disc, boo for the +R disc. Ritek is a much more reputable facility.
The Maxell DVD-R media carries a RITEK F1 media identifier. Opinions for that MID seem to vary but, overall a good choice (definitely better than RICOH).
The Maxell DVD+R media made by RICOH proved to be far less reliable! Error rates using a Pioneer burner were sub par!
Stay away from +R media sold under the Maxell name!
You can see the full review at
BitBurners.