Any thoughts on reading maths in papers using the Kindle Paperwhite?
I have been trying to find an answer elsewhere but it is difficult to to get an answer to this specific question.
I would recommend getting something with a color screen and quick rendering capabilities. I personally find that I need to zoom in a lot while reading math pdf's and (especially) books, as well as swipe through pages quickly to find something. This becomes extremely annoying if your device lags as you'll be waiting upwards of a few seconds per page which adds up if you're trying to skim thirty pages. As well, switching between pdf's with ease is very useful. Don't take my word for it though, go to any electronics store and try one for yourself, download something off arxiv and play with it.