wizardoffarts, that isn't I very good ratio. I can't talk much though. When I first started out, I burned some very expensive coasters using Memorex 4x discs in my Iomega burner and many of them too. I switched to Maxell and haven't had a single problem. I'm not recommending Maxel (may not even work for you) but I am suggesting hunting down 3-packs (or as few discs as possible) of other brands and giving them a try. Of course you'll have to check them in all of your stand alone players too to make sure they don't have issues with them either.
Also, some players have better transports than others. I have some DVD players that will skip and/or pixelate with my backups but others play them fine and you can't tell them from the original.