I totally agree about those Ritek D01 -- bad news. I bought a spindle of 30 Fuji DVD+R DLs (rated at 2.4X) on sale, with coupon, for $19.95, who could resist? I didn't know they were Ritek's until opening the spindle.
The first three I burned at 2X on my Plex 760 were successful, played fine on all my standalones, no scans yet -- to long to test on 2X DLs. But when I tried burning at 4X w/my BenQ, it was coaster time! I'll use up the rest of the pack for non-essential backups -- never Fuji again! I should have checked the forums before buying them first. :doh: