I'll be keeping my 2004 DVD mainly for the commentary and the occasional amusement of listening to Darth Vader speak French. (although Irvin Kershner's babbling on ESB is infinitely more fun to listen to than anything Lucas has to say )
However, as far as just watching the movie, Adywan's edit seems like it will be the definitive version. (and hopefully soon I can replace my GOUT with the X0 version)