He is certainly a great director, still not on the level of PTA or Tarantino for me but I hold his movies very high in many regards. Also, if you are referring to Dune soundtracks please check this video where Hans Zimmer explains how he came up with the music of Dune : https://www.youtube.com/watch?v=93A1ryc-WW0
Which one though? There's the David Lynch version, the Sci Fi mini series, and the most recent adaptation. They all have their pros/cons, but I honestly prefer the Sci Fi mini series. It's lower budget than the movies, but I think they did a great job at adapting the source material.
Not that the new one isn't nicely done, but David Lynch's creativity will always stand out as the superior film. The new one borrows some of his stuff which is more than fine, but it just isn't as willing to get weird as Lynch was.