What is the best book reader?

I love reading books and eager for a cool book reader. Now I’m in use of Laputa on Android. I like the many free books. Before downloading books I can got more information such as the the covers of the books. I really like the friendly interface and cool flip flash effect. There is also little problems. Sometimes I enter categories, my Laputa crashes. Besides I don’t know how to import my own epub books.
What’s your favorite book reader? What advantage it has compared to others and how about the shortcomings? All opinion appreciated!

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I think that depends on one's hobby and how to use to say a best, but there're many good ebook readers indead. Such as: FBReader, auduaReader, wordplayer and so on.

Thanks !!!!

iPad!

I personally love iPad, however, my eyes hurt so much.. it just dries up in seconds.
Next to iPad is of course, Sony reader.

kindle touch

Foxit Reader