(I’m pessimistically optimistic about DVD-RAM).
The specs below for the Samsung SH-S182D show that 12x DVD-RAM is equivalent to 16x DVD±RW. That makes DVD-RAM technology twice as fast as DVD±RW because the latter is only at 8x speed. Cool! It would be great, IMO, if DVD-RAM became the definitive data media for PCs. That would help users greatly I think since burning data discs is so cumbersome without native OS support, not to mention that the other media (especially the write-once media) is not as reliable. Users haven’t had a decent way to exchange data on removable media since the floppy disk (way too long). There still may be some confusion though as to whether to use FAT or UDF though.
Media Type Write Read
DVD+R 18X (24.3MB/sec) 12X (16.2MB/sec)
DVD+R Double 8X (10.8MB/sec) 8X (10.8MB/sec)
DVD+RW 8X (10.8MB/sec) 8X (10.8MB/sec)
DVD-R 18X (24.3MB/sec) 12X (16.2MB/sec)
DVD-R Double 8X (10.8MB/sec) 8X (10.8MB/sec)
DVD-RAM 12X (21.6MB/sec) 12X (21.6MB/sec)
DVD-RW 6X (8.1MB/sec) 8X (10.8MB/sec)
DVD-ROM - 16X (21.6MB/sec