What would be the best device to read ebooks based on two criteria:

1) Good screen. I’ve only seen first Kindle live, but the screen on it is horrible. I currently use VGA PDA, I realize it’s not going to be nearly as bright and crisp on a reader, but must be reasonably sharp, and good in darkness.

2) No format lock-in, I should be able to copy html pages, txt, pdf, whatever.