As an engineer, I am totally willing to believe that the EPub format itself is capable of producing gorgeous, reflowable documents that would knock Edward Tufte's socks off with their design. As a reader though, I've also been disappointed. I don't really care that a book could have been authored better. I want nicely rendered math and I don't want random
line brea
ks
and other ug-li-ness that makes me squint and scroll.
One reliable way to avoid that is to just get a PDF instead. This may be a historical accident. The PDF formatting is probably closer to the print layout, which is most publishers' core competency. Maybe the tools are better, or the layout staff are just better trained on them. Maybe it's the reader, rather than the document. Regardless, I'm going to be reading it on something paper-shaped (and often, sized) so it's barely even a tradeoff.
(Btw, I'm told that PDFs of Tufte suck and the only way to read him is on paper.)
> I'm going to be reading it on something paper-shaped (and often, sized) so it's barely even a tradeoff
Just as I wrote at the beginning of the thread: “buy a special device to read this format”.
The most difficult of your criteria is ‘the right size’, mostly because of varying screen dimensions and viewing distances. It's not a problem on desktop, though, and having this issue on a phone is possible only because HTML is reflowable to the screen size in the first place. Moreover, HTML can do things that are verboten and unthinkable in PDF: having an individual image zoomed in and panned without the rest of the page moving away (most sites stop at screen-size ‘lightboxes’ so far, but I'm thinking of slapping together an extension that would instead do the full zoom-around thing on any page).
Overall, it sounds like the same old tradeoff of whether you want to do glamour-magazine-style fancy hijinks with your images, or you want to be able to read the documents on smaller screens and devices. And I know which one I choose.