If you are in the USA and looking for an e-ink ebook reader, there's also the
iRex's iLiad, available through
eRedear Outfitters. Of course, at 699 USD, it's a lot more expensive than Amazon's Kindle, but the reading surface is larger, with a touch-screen, note-taking capacity, Wifi connection for downloading directly your ebooks & newspapers, plus self-publishing capacity through the MyiRex communities...
If you think about it, the Kindle is a kind of iLiad clone with uglier design and DRM-locked platform. Oh, and only available for the USA, not the whole world as iLiad. But, but, it's cheaper...
If Sony is going to have a hard time competing with Amazon, the same is true of iRex...