http://www.jinke.com.cn/english/v2/index.asp

It handles PDF? That's a major step forward. I'd be very glad to have more information and, if possible, a unit to beta-test. As I have been in love with ebook readers for years and at present have two dedicated ebook readers plus an iPAQ that I hardly ever use, but I am a very bad techie, I'd be a good "sample reader" and would be able to edit the instruction material into something readable by most people.