i have never a problem to encrypt data with anydvd and dvd2one. The problem is the speed. As you said right anydvd is developed by elby and i think they optimised it for clonedvd.
But i think there is no need to change to clonedvd. I use dvd2one as it comes out, i had no problems and it is very easy to use and
the outcomming versions are very stable. See other products and their bugfixes!!!
Keep on good work