In one word: NO
I have a Cybook and it has all the functionality I want but for one exception. I would like the search-function which (afaik) the new Sony has.
Sometimes I really would like to search for the first appearance of a name in a book, just to remember who the ..... that person is anyhow... (anybody with Wheel of Time in ebook-format over here ???
But I wouldn't want to buy an extra reader just for that purpose..