I've been kinda wondering the same thing. I back up my owned DVDs for the kid's DVD player in the car so that the originals can stay safe and sound in the Media Room. So far it's been hit or miss, so it's good to see some recommendations that I can try. I suppose it also depends a lot on the brand/model of DVD drive you make the copies on.

Ken. VaSSallo Series M60v2, VP100v2, QS8v2 SVS SB12-Plus