I'm beginning to think that +R is better for me, at least. But I would say get a burner that does them all if you ever need to be compatible with others' players. Forget the debate. Just adapt to what is and will be.
My 3 Toshiba players (1750, 2200, 6200) will play TDK DVD-Rs and TDK DVD+RWs (using the bitsetting utility for the +RWs). They will not play TDK's +Rs. I understand that they will play other brands' +Rs.