Hi I am looking for a good e-ink device with the following features: a. PDF support with annotations. The screen should be capable of displaying one full page with readable font. b. easy navigation to different parts of long article. Navigating by page number would be helpful. c. internet access I have tried Kindle, 6" E Ink Display. It supports annotations but one PDF page is split into two parts which obstructs the reading flow. Navigation is handy (two buttons for page up and page down) but navigation to a distant part of the article requires lot of time. Kindle was designed for reading books and it serves it best. I was wondering if there is any such device for surveying research articles (with lot of equations).