I have a dual writer. I find myself using DVD-R most of the time. I've probably burned 100 DVD-r's, 12 DVD+R, 3 DVD-RW and one Sony DVD+RW that Ive reused 10 times. I use them on a Samsung DVD Player, an Xbox and a PS2. My Xbox doesn't read DVD+R's, but that is drive dependent since the xbox uses multiple drives (mine has a samsung) I use DVD-R mainly only because of the 70c/disk Price.