The Buffalo DVSM-PC58U2V(B/W) has a Samsung SN-208DN inside and uses its own firmware. The offical Samsung's firmware can be used in this Drive.
TDK 16x DVD-R TYG03 (Made in Japan) FW: AF03 Burned at 8x
The Drive supports Disc Quality Test but can't report jitter.
TDK 16x DVD+R MBIPG101 R05 (Made in Indian) FW: Samsung SC00 Burned at 8x
ODC's Drive info when using Samsung firmware.