No.... just... no.
I'm a huge Herbert fan, and have read all sorts of his books other than just the Dune trilogy (try White Plague, way ahead of his time), but I have to say, the new prequels just suck.... bad.
I read House Atreides, and thought it was bad. Decided to give House Harkonnen a second chance, and couldn't even finish it, I thought it was so bad. The writing just isn't Dune-quality... it's not even close. And that's not even commenting on the subtle rewriting of things...
Forget it. I'm not reading anything Dune not written by Frank Herbert again....