I use a combination of DVD decryptor and AnyDVD. I use DVD decryptor to chop out everything but the main movie and english surround (AC3 or DTS) audio and to automatically save it as one large .vob file. It works on all older movies and some new ones. For the ones that it can't decode, I use AnyDVD. It runs in the system tray and decrypts any DVD that is put in the drive, you can then use the "ripper of choice" to make the copy. The ripper (in my case DVD decryptor) then sees the DVD as an un-encrypted one and works as normal.
DVD shrink would probably work too, but I want the full uncompressed movie with audio and video in one file and without a lot of hassle, DVDdecryptor/AnyDVD rips a DVD in about 7-10 minutes on my system and the only intervention is to insert/remove the DVD and tell it where to copy it, and the last part could be scripted if I had a lot of DVDs to go through...I only make copies of DVDs I own, and I don't have that many yet but the speed and ease of use should work just as well for those with large collections.
Hope this helps,