i always try to stick with dvd-r media cuz i've never had a problem with it. also, i've had good luck with every brand found at your local computer (best buy) store. When i got some off the internet, they didn't work and they looked very cheap.
i've heard that dvd media has to go thru a lot more testing than cdr media, so any brand should be good quality. its more of a matter of just finding something that works in your dvd players and your burner. i've had success with memorex, fuji, tdk, and even cheap compusa dvd-r's. all work in my dvd player and my xbox. the compusa discs didn't work so hot in my friends older sony dvd player.