You know, I picked up the 4e PHB and looked at it and found a book that was highly readable, laid out in a way that was function, and yet has a really nice clean modern look that still says "adventure!" to me. I picked up a copy of the PF core rulebook and ran smack into a giant wall of text written in small font on a background that made it hard to read. It is a nice looking book, but I can't READ IT, and frankly the way the rules are presented there is just really off-putting. Referencing it in play would be a big chore, no thanks.
And realistically, I love books. I have tons of really nice 'table books' and such. None of them are game products. I don't mean to criticize the gaming industry, but frankly I have not yet seen the kind of really super high quality layout, design, and art in ANY RPG that could compete with really beautiful books. RPGs are too mass market and serve too many other purposes to reach that level. They would have to be so expensive I would be afraid to use them to reach that level.
The 'fluff' vs 'crunch' issue is IMHO a separate issue. A book can be laid out cleanly and have high usability and still present plenty of fluff. HotFW does this quite nicely.
As for 'cherish', I agree with delericho, I cherish my original Gamma World and OD&D books, and my Holmes Basic book because of the memories, not anything to do with quality. They are valuable to me for the memories, not presentation or quality.