I saw tapes of the Dune miniseries and was largely nonplussed. Some parts were good, a blond Jessica was a nice touch, but a lot of it I found unremarkable. Say what you will about Sting but at least he left an impression. The only thing I remember about the miniseries' Feyd was that he had a triangle behind his head. And I recall not liking the fight scenes in the miniseries very much.
My preferred adaptation of the first Dune book would be the Lynch version. ( I'll never forget how they actually gave you a cheat sheet when you went into the theater, something that would have been a collector's item if it hadn't almost immediately been ink-smeared by greasy popcorn fingerprints. ) My optimal version would be something that doesn't exist. It would include the deleted scenes that were in the extended "Alan Smithee" edition, with their special effects completed
, and with all the crap
of that edition ( the voiceover, the scenes reused out of their proper sequence, etc. ) taken out.
I also embraced the Dune Messiah / COD adaptation because, well, it's the only version of those books that's been filmed so far, and I liked it ( though it mangles the plot in areas such as Halleck's involvement with Jacurutu ). So I just kind of tolerate the disconnect of Paul Atreides changing from Kyle MacLachlan to Alec Newman.