[parkher]

Helen,

You might be right, I don't even care to try out other readers because Cool Reader has all I need and I am accustomed to using it.

1. Cool Reader (jotas version) fully supports T2 buttons. That cannot be said about many other android readers.
It is a very important advantage to me. As I don't like touching the screen.
And also, other readers may not work well with e-ink and its slower refresh.

For example, if I can do everything with T2 buttons, using page down / page up in every list, it is so much better than to drag with the finger instead, especially that other apps like to add lcd-oriented animations - unnecessary intermediate refreshes that are bad on e-ink.

Furthermore, Cool Reader allows to map various actions on T2 buttons.
I have mapped to the buttons, for example:
- switching the status bar on/off
- switching using internal book formatting on/off
- switching between profiles
- invoking the list of last read books

2. The list of last read books is very important to me, so no accident I have it mapped to a button.
For one thing, I like trying reading many various books. And I like reading a few books simultaneously and switch between them too.
But also, from that list Cool Reader allows to get directly to the folder of the book.
It is a very convenient shortcut when I want to open another book.
From the same folder or from some other folder nearby.

3. Actually, Cool Reader for me is more than a reader. It is the whole OS, really.
I never leave it. It never happen for me to exit it.
Because I have everything right there inside it.
I have all my books in a hierarchical directory structure, easy to navigate and find books.
And Cool Reader has its internal file manager. And also the above mentioned list of last opened books - a very convenient shortcut.

4. Because of the internal manager in Cool Reader, I am able to switch off completely the Sony indexing of books. So T2 does not choke with too many books.

5. Cool Reader nicely integrates with several dictionary apps. My favorite is GoldenDict.
Android dictionary apps, unfortunately do not support fully T2 buttons yet.
But GoldenDict is the most easy and convenient to use. At least it has buttons on the screen and it allows to jump to one specific dictionary. And partially T2 buttons are supported by a hack which comes in a rooted T2 (button support in ListView).
GoldenDict supports multiple dictionaries of dsl, lsd and stardict type, and others.
And it is very fast.
I have more than 40 dictionaries simultaneously, they take 10 GB on my external card, and GoldenDict has no problem with so many dictionaries.

So yes, the ability to use any dictionaries I want and any number I want simultaneously from Cool Reader is a big deal for me too.

When you can lookup a word almost instantly, you are using dictionary more often than when you need to go to the computer.
I have great encyclopedic dictionaries on T2. They fill well the gaps in my education: history, geography, mythology, you name it - its like having wikipedia on T2.
Actually, you probably can have wikipedia integrated as a dictionary, but I never use wi-fi, so I wouldn't know.
Furthermore, words in dictionaries in GoldenDict can be chain-referenced. Very convenient. Even switching between multiple languages in a chain.

6. Cool Reader has its own high quality renderer and really shows books very nicely: with multiple hyphenation dictionaries available for splitting words, handling footnotes perfectly, etc. Lots of things that can be fine-tuned in settings.

7. As I wrote before, for me it is crucial to have good landscape support: because 6" screen is too narrow for portrait, and because it is so much easier to hold the ereader in landscape than in portrait. Believe me, if the ereader has a cover, landscape is perfect for holding it with a completely relaxed hand.
And for lanscape I need wide margins - you don't want the line of text to be too long, and you also don't want the text to be too close to the edges of the screen, especially if the bezel is black.
So you need a reader that allows to set margins 1 cm or wider. Cool Reader easily can do this. Probably a number of other readers, though. Certainly not the native Sony reader - they forgot margins completely.