I have read all of the Frank Hebert novels several times and adore them. Even God Emperor of Dune. I have never read any of the Brian novels because I hear they are such trash. But now 40 years after first reading Dune I am starting to question that decision. Should I?
If you’ve read all the OG Dune content, I say go for it. They aren’t at the same level, but they’re… Fine. Get it from the library or wherever and try it. Go in with low expectations and possibly get pleasantly surprised, or never pick them up again.