That really depends on the PDF. Most PDFs I read are CS papers (heavy on PL theory). The only pictures they have are commutative diagrams. For that, e-ink is pr

That really depends on the PDF. Most PDFs I read are CS papers (heavy on PL theory). The only pictures they have are commutative diagrams. For that, e-ink is pretty good. Of course, screen size is a different story. I've had some luck getting the TeX sources and recompiling them to fit on the screen, but that's too much effort in general :P. Still, for the papers I tried that way, it's great.