I have a NEC ND1300 firmware 1.08 and have been buring on various media. I find the Ritek G04's the best, while they play on my Toshiba SD-k620 player fine, I tried them on 3 different Toshiba SD-K730's and the playback stutters. I have other Ritek (2x I believe) that play on my player fine but freeze up on the 730's. I had some Princo that I have mostly tossed, but one plays on my player with dropouts but freezes on the 730's. I don't think it is the media because the Ritek G04's play on all, albeit not well on some. Is the problem my recorder, the media, or the players? I'd like to be able to backup my DVD's and be able to use the backup on other players.