I like to print them out. Reading from any type of screen hurts my eyes. Has anyone got experience reading papers in Kindle. How does it feel like?
I had some doubts myself before buying my first e-ink based device. It helped a lot to watch movies on y-t where guys were test driving them.
Not all e-ink displays are of equal quality. The newer ones should be ok, those claiming 16 levels of grey. However the definitive test should be made by your very own eyes.
Edit: I don't have a Kindle.
For papers though, not so much. The screen is too small for a layout format like PDF to work. The document has to be able to reflow for the screen like a proper e-book to work really well, and PDFs don't. I've heard the Kindle DX was great but those haven't been made in a while, otherwise there's a few big ones Sony made which are apparently awesome but expensive.