I peeked at a few but didn't buy. Many books are just a long novel with no graphics. For such books, the Kindle store is fine as there are no issues with graphics or missing TOC or waypoints. But when I peeked at books that should have table of contents, quite a few of them didn't - even recent popular books.
I didn't do an exhaustive survey by any means, but the few full-priced (at least somewhat) popular contemporary books I checked out on both Kindle and Nook were better done (on average) on the Nook, as table of contents were more often included with Nook books.
To me - the fact that I should have to examine quality when paying $10 for a book is inexcusable. In a physical book store I don't have to worry about these things.
EDIT: replaced "chapters" with "table of contents"
I didn't do an exhaustive survey by any means, but the few full-priced (at least somewhat) popular contemporary books I checked out on both Kindle and Nook were better done (on average) on the Nook, as table of contents were more often included with Nook books.
To me - the fact that I should have to examine quality when paying $10 for a book is inexcusable. In a physical book store I don't have to worry about these things.
EDIT: replaced "chapters" with "table of contents"