I have some Sony (SONY08D1) that I have ran some test on how can I post the Pic here? Ok I did the attachment thing hope this works
General Information
Operating System Windows XP
Drive BENQ DVD DD DW1620
Firmware Version B7S9
Serial Number
Disc Blank DVD
Capacity 4.38 GB
Transfer Rate
Start 6.68x
End 15.98x
Average 11.93x
Type CAV
Log
Time Elapsed Action
[02:32:58] Starting Transfer Rate Test
[02:38:54] 5:56 Speed:7-16 X CAV (11.93 X average)