I also have DVD-X Copy Platnium but have not run across any copyright movie that Express or Rescue couldn't do yet but I haven't tried the 2 movies you couldn't backup. Had to use Rescue to backup a copy of Inhabited since thats the only movie I found so far that Express couldn't do.
I just recently bought Intervideo DVD Copy which seems like it might be good software. It has an option of backing up DVD's to DVD, VCD, SVCD, and DivX. The only option I've tried so far is Dvix and the picture quality looked very good using Windows media player, almost as good as DVD. You can fit a whole movie on 1 CD-R with extreme quality. Unfortunalty I don't have a home DVD player that can read Divx but from the looks of things it will be the next big format for home DVD players to be able to read. Sounds like their already popular most everywhere else but in the USA, and not too many home players will support the format here until later this year according to an article I read on the net about Divx.
. I was pissed to find out that both of my newest players couldn't read the format, I wish I would have waited and bought one that could read Divx but at the time I didn't know much about it.