DVDxDV Pro is designed for video professionals. DVDxDV Pro allows users of high end editing systems, such as, Final Cut Pro or Avid Media Composer to extract high quality multi-channel audio from DVDs.
DVDxDV is for the home video enthusiast. It allows video to be extracted from a DVD and imported into iMovie and iDVD. DVDxDV uses the same video extraction engine as DVDxDV Pro.