Maybe the "decent" is also a bit dependent on reading speed? If you're turning a page every 15 seconds or so, navigation and speed of page turns becomes very important. And a couple of seconds difference feels huge, and disrupts your flow.
There are also eyeball/brain issues: PDFs (displayed without reflow) mean Somebody Else's Font, and when it's been formatted for a page this seems to invariably mean tiny thin spidery letters.
|