Quote:
Originally Posted by qipi
2) It should support all the well known formats - PDF, EPub , MOBI and DJVU,
And that I could transfer all my files to the device without the need to use some kind of store app like in Amazon (not vendor locked).
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No e-ink reader I know of is vendor-locked, in the sense that you can transfer all your DRM-free books to any of them without needing to buy from the vendor. Kindles don't support epub, but converting your epub files to Kindle formats with Calibre is pretty trivial. On the other hand, only Kindles support books bought from Amazon directly, for any other e-ink reader you have to convert those the same way you convert non-Amazon books for a Kindle. Even if a reader has Mobi support, it still won't support any Amazon books without converting.
To my mind, format support doesn't matter if you use Calibre. You can get whatever e-ink reader you like and buy from any vendor you want. If you don't want to convert, then you have considerably fewer e-readers to select from.