I have a countless problem with media with my burner and so lost a lot of money in buying blanks only to find nice coasters to Mexican car ornaments
The only media I seem to have %100 no problem with is with RICOHJPNR01 branded TDK DVD+. I don't know what other name brand uses RICOHJPNR01 but I love em'.
If these freak'n' companies would only list on the label to what name media is on their product It would be easy.
Stay away from Memorex because they suck I had got a 50 pack and all of them except 5 discs worked!, they use cheap Ritek.