"Great book and narration"
I'm almost finished with the book and I have found no problems with the narration or editing. I can see what other people mean about it being a bit difficult to keep track of all the characters and figure out who is talking, but keep in mind (for those like myself who are new to the Foundation series) that the book moves from epoch to epoch, with each story having a manageable number of characters. I also agree that the narrator (Scott Brick) doesn't do the best job I've heard him do of distinguishing between characters, but it's really not bad.
On the content side, I'm a fan of many Star Wars books and a few others by authors like Kevin J Anderson and Timothy Zahn but had never read much of Asimov. I'm already hooked and looking forward to the rest of the books in this immense series.