This thread is interesting, I have the Mad Dog version of this drive and have used SB02 through SB04 and have noticed no problems with DVD-R. I keep a log book of my burns so I can see what media works with what drive. After each burn I scan the burnt media in my Benq DW1655 and Lite 165H6S then make a entry as to the quality of the burn from each reader. I have had no problem reading any of the burns from my Samsung drive using TY DVD-R media that I have. I have no other type of DVD-R at the moment so I can't comment on other brands. All of the above burns have played on my 400 disk Sony changer as well as my 5 disk and single Disk Sony players. Only other player I have used is my portable Philips player.

Looks like I need to try some other drives and players and see if I have the same issue.