For a better look at the options available in CloneDVD 2, take a look at this page of mine:
After DVD Decrypter stopped being updated (over 1 year ago), I purchased and installed AnyDVD, and also purchased CloneDVD 2, which are both made by SlySoft.
Although AnyDVD is set to run anytime that I boot into windows, I still like to use DVD Decrypter to get and idea of how large a movie I am dealing with. By that I mean with AnyDVD running in the background as my primary decrypter engine, I fire up DVD Decrypter and use it at the same time.
I also give DVD Shrink a go. If DVD Shrink can't shrink the movie, I then use CloneDVD 2 to write the entire movie to a dual layer DVD+R and by doing that, I have an exact copy of the movie.