yep those r pathetic. it gets hardf to read for most players when it exceeds the standard PO which is 32. but getting like over 200-600 in some spots is a joke. no wonder the player wont read it. i would take back those piles of garbage if u bought more than 10. seriously, if the guy says they sell thousands, they never had anyone come back, ur burner is incompatible or some bullshit, kindly ask for a refund. then once u get it, either punch his lights out or mouth of at him like never before. teach those know-it-all-but-actually-know-nothing idiots a lesson.
and BTW. good dvd-r discs are taiyo yuden or ritek. i havent tried ritek but i hear they r good. taiyo i have tried, and they r brilliant.