just to make my situation clearer;
I currently own a ricoh dvd644 single layer burner which bitsets.
I currently own a pioneer 108
I am using verbatum 4x dvd+rw and dvd-rw disks
I have tried burning dvd-rw and dvd+rw with the pioneer at 2 and 4 speed but my standalone will not detect the disks.
I have tried burning dvd-rw, dvd+rw, and dvd+rw bitset to dvd-rom with the Ricoh, but only the bitset dvd+rw to dvd-rom is recognised by my standalone player.