people say don't use Nero to burn.
It is mainly one person isn't it
They are exact 1:1 on DL Datasafe DVD+R's. The Pioneer 109 automatically set it to DVD ROM in both Nero and DVDD.
It does seem that DVDD has produced better compatibility for this Recorder. My Sony and Pansonic players have no problems reading Nero and DVDD burned discs.
I also tried to do a movie only DL backup with Nero and before Pgcedit could do DL. The disc doesn't work in any DVD players. It does however work in my LG 4040 DVD writer. The drive doesn't normally read DL media so, it must be the DVD ROM setting making it work. The LG 4040 can output the DVD to my projector so, i can still make the disc work and haven't created a coaster as such.