Check with the maker of the drive, they usually list disc that are tested with the drive. I have read others replys and they are good, as an example, I once used memorex, had very good results, next time I used them, had a lot of problems. I checked and found they changed who made them, the best way to do this is thru software, I use dvd info pro, but nero will tell you also. I also agree that even if a burner and disc are rated at 16x, it is better to burn at a slower rate, I usually burn 4x sometime 8x. Make sure you have the latest firmware from the drive maker, it helps with new disc formulations.
If you are going to do video to play in a dvd player, use dvd- While it is true, most new players have no problem with either, the dvd- plays in a lot more players, and for those of you that are really into burning, I have even used bit setting, that changes the dvd+ to look like a dvd rom, it helps for player compatability, but still not as good as dvd-. The very best brands are verbatim and Taiyo Yuden, I can not find Taiyo locally and order them. The major retailers often have great prices on name brand dvds, usually around 25.00 per hundred. There are many sites to order and find out info, one site for good info about disc is http://www.videohelp.com/dvdmedia Another thing, when you are burning, don't be surfing, playing games, using instant messenger, make sure your antivirus is not going to kick in while burning. I know there is a lot more, but if you follow these few suggestions, you will be on the way to no coasters. I hope this helps.