Originally Posted by Bilbo1967
I'd say that if dictionary look up is that important to you then you should probably be heading back to school.
Seriously, if you really enjoy reading enough to consider shelling out serious money on a dedicated reading device then I would expect you would have read enough to not be stumped by words often enough to justify needing a dictionary by your side.
Keep in mind that English isn't the native language for all e-reader users. In my experience, reading books is one of the more pleasant ways of learning a new language. I'd love to have a reader in which I could substitute German-English, French-English, or Spanish-English dictionaries to improve my knowledge of those languages.