Dear mgmueller (or anyone else who can help), thank you for your very helpful comparisons. If it would be possible for you, I would be most grateful if you could answer the following question for me.
Background: I very often read scanned pdfs, where usually the ocr-text-layer is below the page image or not present at all. I am deciding on buying a prs-505 vs. a kindle dx (other suggestions also welcome). My concern is that such images might display much slower than mere text files.
Now, can you tell me how slow such files display (is it also around 1 second per page turn, or how much more)? And is one the the two (or other) devices considerably faster? That would be very nice!
(In case i did not explain clearly enough what kind of pdfs i mean, here are 2 examples of pdfs technically like the ones i often read: http://muslimphilosophy.com/sina/art/marmura4.pdf