I have been using the Panasonic DMR-E20, E30 and and HS-1 from Japan. All are stand alone DVD Recorders. It is said that DVD-Rs should play in about 80% of players. I have found only one player that will truely play these DVD-Rs, that is the Panasonic RP91. Many claim to play DVD-Rs, and most will read the disc and begin to play, but in every case they will begin to skip, lockup, freeze and then shut down. I have used many types of DVD-Rs and all are the same. They will play back perfectly in the recorders. I have tried over 40 players made in 2001 & 2002 that are listed as DVD-R compatible, but they are not. Does anyone have any idea what is the problem with these units. Is is simply the Panasonic unit. Would the stand alone Pioneer be better. I have tried players from Pioneer, Philips, Samsung, JVC, Sony, Panasonic & RCA and none really work. I am think of switching to DVD+RW, will it still be the same with it? Any ideas.