DVD X-copy platnium does a good job for me (nice quality picture), but like someone else said it does have its bugs. I personally see no reason for the annoying backup screen (luckily someone made a hack for this), and I've noticed that the sofware freezes if I have my HP printer turned on.
I also think it should have more features for the price. It should be an all in one burning solution, not just for copyright movie backup.
. The software is very limited for my burning needs but it shines where most other programs sometimes flop.