When it comes to an eBook reader, the choices are limited. The market is dominated by Amazon’s proprietary Kindle along with a few other options like Kobo, Nook and Onyx.
An interesting news for open source enthusiasts is that a developer, Joey Castillo, is working on creating an open
personally I use a 10 inch tablet for pdfs, reading PDFs on eink is a terrible experience.
PDFs are also often reference materials that require flipping back and forth. which makes it doubly painful.