I have recently got an Onyx Boox i62HD, and I love it!! It has a high resolution pearl screen, it organizes the books in folders and the pdf management is very good. I use it for reading not only books, but also scientific papers, and it handles two-columns pdfs really well
I got it from ereader-store, as the guy of that store is very active in this forum and works improving the firmware.
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http://ereader-store.de/en/onyx-boox...oft-touch.html