Are the dual layer drive just +R or are they +RW and +R?
Currently only for +R while +RW is expected to be impossible at all because of the low reflectivity
more precisely, dual layer +RW is possible but the resulting discs would not be compatible with most DVD players.
And even more expensive than DVD+R DL.
I'm just looking for a media to store MAME roms on. Oh well guess its mutli +RW single layer for now.