I saw Dune 2 on an XD screen and sound system. Visually, Dune 2 was jaw dropping. The sound was intense, and at times, too loud and droning. If you are interested in seeing this movie, it is worth seeing on a big screen.
Though I was fully engaged for its 2 hour and 46 minute run time, I would not call Dune 2 a masterpiece. Most characters acted emotionally flat. I also felt the romance between Paul and Chani was not convincing. When the story was reaching its climax, I did not care about the characters. I also think the movie should have spent a little time on setup about the Fremen. I get that they are oppressed by the Harkonnen, but their sacrifices and lost freedom should be shown to the viewer so we understand the emotional motivation to do a full assault on the Harkonnen.
Austin Butler was so intense in the movie. It illustrates his acting range. I hope he is recognized for his performance.
And here are some little nit-picky criticisms. They don't address how the Fremen eat. In terms of world building, these sort of details are necessary to make the world believable. I'm not convinced humans could survive on Arrakis. There is no way you could grow crops and raise animals. Did they eat synthetic food? The planet also couldn't sustain gigantic worms. These huge beasts would have to consume millions of calories a day, which is not available. Showing the details of a sustainable life on such a dry planet would help with believability. And the voice control thing done by the Bene Gesserit is sort of dumb. I know this is from the book, but that part of the book doesn't hold up over time.