What is your opinion on what brand of DVD media is the best?
Brand is not too important. What's important is the media code of the DVD, or so I've read.
You should really look at some of the forum threads before asking. Taiyo Yuden, Verbatim, Maxell, Ricohjpn, TDK
Have had good results with Verbatim, Ricoh, Imation - no luck with Laser brand DVD+R X4
Go to the Media Forum on this site. You'll see tests of a ton of different medias and get a ton of answers to your question.