The Brian Herbert books aren't bad, but don't go into them thinking that the writing will be the same as his father. I've read a few of them through the anti AI Jihad timeline. They're not terrible but they feel a little rushed compared to Frank's writing... not "we need to get these out for the sake of the IP" like how Disney is just printing Marvel movies, but more like "meh, it could be better, but that's as good as we're gonna get it for now, just publish it."