I am at my wits end with wasting countless disks.. I was using Taiyo Yuden -R disks and ran out. In the meantime I bought a stack of Sony DVD -R's. They worked fine but I ran in to a batch where when I play it back in my Sony DVD player it says the disk is dirty. I've washed them (with soap and water because that has worked before and one actually worked when I just used water on it) but it's not consistent. So, I had bought a stack of Memorex +RW's for recording my son's football games so I thought I'd try those on the movies that wouldn't work and they worked!! My 100 stack shipment of the Taiyo Yuden's DVD-R 16x came today. Tried one..it said the disk was dirty in my Sony player. I tried it on the el-cheap dvd player in a different room and the dvd worked. I just can't figure it out. Any thoughts on why it says the disk is dirty in my Sony player when I KNOW it was recorded because it plays in my el-cheapo player. How can it be the media when it's worked before??? Would love some feedback..