And now I have the PRS T! Sony and must say when you unpack it has a distinct WOW effect. The housing bill very robust, it is lightweight and fits comfortably in your hand.
The turning the pages at ePubs goes very quickly - and "normal" for large PDFs just - I read from the university from quite a lot of scientific books that times have quickly than 1,000 pages since it can then from time to time to slightly longer loading times (Felt come 2 seconds instead of one).
The contrast and the sharpness of the Sony Reader is amazing compared to my Oyo - here you can really read forever without getting a headache.
The only thing that bothers me a bit is the fact that you can not set its own folder structure. Especially with my "university books" that is quite annoying, as they are often divided into "Introduction" main part "" final "and thus are multi-part and often have the same name. The Sony Reader assigns them though chronologically by the date they nevertheless will all quickly become confusing.
Remedy something you can create only the function "create collections", because here it is possible (as opposed to Oyo) own collections such as "Fantasy", "Thriller", or just to create "Uni-books" and the books there to link - the actual "Bookshelf" is indeed confusing, but it goes the way of his collections have been created quickly what you're looking for.
All in all, not an optimal solution, but a significant step in the right direction.
Tip is especially the Wikipedia function - one has in a foreign word or technical term times no idea what it means, just press it and get the same translation display and the ability to search in Wikipedia afterwards (especially in historical novels veeeery interesting because you the same can compare reality with fiction)
only comic is still that Sony a pen for handwritten notes with supplies which you can enter querbeet throughout the book, but no support for this is available on the reader itself.
Ie read in the garden and take notes only goes through the digital keyboard - unless one drags the pen to always separately.
All in all a top reader at a fair price - rather the 20 spend more and get a really good reader (and not buy the Oyo !!!)
only deductions are the folder structure and the comic pen solution, but that is also a matter of taste whether one really needs.