I agree with Harry about the DR1000S. It's nice but it won't be a replacement for your Cybook.
If you were comfortable with the form factor of the Cybook (I didn't much like it myself
) there's also the PocketBook 301+:
http://www.pocketgoods.de/eBook-Read...d7m488dmftkjtp
I recently bought a PocketBook 360 and I'm quite impressed with the software. The FBReader application is very costumisable and it's easy to use. For an e-reader with so much functionality it feels quite solid and pretty close to 'just works' (Kindle is the one e-reader I
would say 'just works' - especially from a Mac perspective - but it has less functionality and PDF support is very basic.
One other thing to take into account, weight: The Neo/Boox is 298 g and the PocketBook 301 is 174 g. My Kindle feels like a brick in comparison to the PocketBook 360