The higher a drive scores on the sheep test the better.
I haven't come across many CD's that CDex or EAC wont rip.
I haven't come across many CD's that
CloneCD wont dupe a protection free back-up.
You can search the CDF archives/forums and the Internet for methods to by-pass any protection that's possible to by-pass.
When I can't I make an analog back-up.
What are you trying to do?