I learned a lot from here so it's time to pay back.

Hello. Not always fine if it plays. When I started out burning I had some discs that scored badly, but played fine. Ok, I thought, but after taking these around and trying them in other brands of players I found that these discs were full of skips, stutters, and some would just freeze the player completely. Just because it plays in a few machines doesn't mean that it's necessarily ok.