I forgot to mention, as part of my post on reading and the Box of Books from Elder Sister's house, that Hunters of Dune by Brian Herbert (son of Frank Herbert) & Kevin J. Anderson was in the box as well. Against my better judgement, I read it. Alas, I was not disappointed.
I loved Dune. I experienced mild disappointment with Dune Messiah, then felt that perhaps it provided an acceptable bridge to Children of Dune. Acceptable. After Children of Dune I think the story arc should of stopped.