Wow, after a dozen brands with my 1620 and 2510s I've found one that plays flawlessly in all 5 dvd players (Apex 1500, Zenith, Playstation, XBOX, and Sony) and friend's dvd players (Sony Vaio, JVC).
Fujifilm03 DVD-Rs these happened to be branded as Staples brand -r's on sale two weeks ago for $7.94 / 25
Yeah, not very exciting perhaps but out of my TYs, Sony's, TDK's, CMC's these Fujifilm03s have batted 100%.
I hope I can find more of these for a good deal.
Chime in on what's worked most consistently for you...