If you have a Toshiba DR570 DVD recorder these discs work great! I've been using it for about 3 months and haven't had any problems. I have used all Yen discs multiple times with no problems. Video quality is very good at 2 hours and very good at 4 hours, acceptable when using the 6 hour timeline. Obviously the two hour format is the best and even the non-high definition channels look really good as Toshiba converts the show to 1080 quality.
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