FWIW I borrowed standalone DVD recorder from work a while back to archive some old 8mm home videotapes. The resulting DVD-R's would not play in my Cyberhome 402 DVD player. They did fine on my portable Koss one. Cyberhome claimed it should play ay DVD-R and other folks confirmed that it did. So it might be worthwhile to do a quick compatibility test with whichever player(s) are improtant for you to use.
Also FWIW our media center director suggests DVD-R. I haven't gotten a chance to ask him why, but he really keeps up with all this stuff, and I'm sure he would have switched to DVD+R by now if he felt it was beneficial.
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