Another choice that might be better geared to students is the Entourage eDGe. If memory serves it was created with students, especially in science fields, in mind. It has one ePaper screen and one tablet-esque LCD screen, and apparently it's received decent reviews from students, though I have no personal experience therewith.
Recent article
Official site
Excerpt from article:
The enTourage eDGe is the first device to merge an e-paper and LCD screen to create a dual-screen device that combines the functionality of an e-reader, tablet netbook, notepad and audio/video recorder and player in one inclusive device. These two displays work together to allow students to access and enrich information in a way that they previously couldn’t. Students can access their textbooks and make notes in the margins or highlight text while they simultaneously look up further information on the subject via the Web on the LCD side.
[...]
The two screens of the enTourage eDGe interact so that users can open hyperlinks that are included in an e-book text and view the content on the LCD screen, or ‘attach’ Web pages to passages in an e-book to be referenced at a later point. Additionally, as the enTourage eDGe uses E-Ink technology for easy digital reading, images will appear in gray-scale on the e-paper side of the device; however, users can load these in color on the LCD side, ideal for viewing colored charts and graphs from course materials. A built-in camera and microphone captures audio and video content that users can store and play back later. Included Documents To Go software makes Microsoft Office documents available for creating, viewing and editing for notes or school papers. The enTourage eDGe runs on the Google Android operating system and backs up all content on enTourage Systems’ servers for safe keeping. The device folds a full 360 degrees and orients its displays horizontally or vertically, to view as a book, single screen, or prop up laptop style.