I realize this is an age-old question/problem, but the only info i was able to find searching was years old, so it might not apply to new systems/advances, etc. I recently bought a 100 piece rack of taiyo yuden 8x dvd's that were reviewed strongly just about everywhere. i initially had 5 good burns of movies for play on stand-alone dvd's, but have had nothing but failure since that. for no reason, the dvd's do not burn properly now. if i'm backing up data, files go missing. if i'm doing movies, they will not play on dvd players, but will on computers. i'm confused as to what to do and looks like everyone pretty much says verbatim is the way to go. advice? btw - when burning dvd's for dvd players, i use idvd one-step and have done 50+ dvd's prior to the taiyo yuden batch with no problem. data burns are through finder. the system is a new 3ghz dual core macpro with 5 gig ram. is it just the media? if so, great, i have an 85 piece matching coaster set. bleh.