Check this out: Its a touch device similar to iPad, but in can run 160 hours on battery without back-light, and in that state its also great in daylight. Has a faster cpu then the iPad, SD card slot, 3 usb ports, and HDMI. It will be released shortly after the iPad this summer. And it will run Android, Ubuntu and Chromium. Last but not least, it will be available for less then an iPad! Theres a video in this link:
http://gizmodo.com/5471559/notion-ink-a ... -finalized