I ended up buying the drive for a laugh, just installed it into sumvision caddy, turns out to be a Benq DW1670
No solidburn,overspeed, or quality scans
auto booktype dvd-rom on dvd+ and Dl+
test write enable/disable
Can set +rw to dl+ dvd-r etc (lol)
just finished burning my first disc on it, A CMC AM3, (don,t laugh aint had one fail to playback) and no the data is still readable 1yr on from previous burns.
and then scanned on 1670 (not quite right) only choices were CAV so choose 8x CAV
same disc scanned on liteon 160P6S