The Lynch version conflicts me so badly. I love Lynch as a director generally, but I am not sure he was the right choice for a science fiction epic. It is not bad -- at least in the traditional sense -- but it is so wildly inconsistent. Certain scenes and characters nailed, but others are just embarrassingly bad. The effects clearly were not up to the task of the vision, though some of the cheesy 80s things about it (such as the Toto soundtrack) have aged surprisingly well given their nature.
I think it is best the Jodorowsky version never made it to production. I do not know how it would not have collapsed under its own weight given the eccentricities of its director, the ambition of the production, and the relatively primitive special effects technology of the mid-1970s (this was before A New Hope and Star Trek: TMP, though after 2001 and other early luminaries, obviously). I wish Pink Floyd would have just went ahead and created the soundtrack as an album, though. I loved that 2013 documentary, and I am glad the effort did have a long-term influence on Star Wars, Alien, Flash Gordon, The Terminator, and The Fifth Element. It is probably the most influential movie that was never actually made.
I feel like I am the lone defender of the miniseries. It certainly has its problems, but if viewed as something of a glorified stage production, it actually does a decent job of telling the story. The Dune miniseries was okay, but the Children of Dune miniseries (with a young James McAvoy) is actually really surprisingly good.
I hope the first two Dune films do well. There is enough material for two more from Messiah and Children if it rakes in the $$$.