CloneDVD needs an addon (anyDVD) to rip directly css locked DVD's. It is supposed to rip directly, but since it is both slower and less reliable than decrypter and shrink, nobody ever took it too seriously.
You don't have to buy anything, IMHO- Shrink is free to use and slightly better/faster, just use that (or Decrypter, if you have probz with shrink) and your fav burning app.
the only case you should consider buying is Instant copy, which is quite slow, quite buggy, but does the best transcoding job by far. You can get better than this only if you use Canopus or CCE and do a full movie re-encoding.