I have a huge library of books in PDF format, and I want an e-book reader that does an excellent job displaying PDFs. I can’t afford an iPad and would prefer to spend less than $200. I have considered models by Amazon, Sony, and Barnes and Noble. I would appreciate detailed opinions based on personal experience. Thanks!

Don’t choose iPad for reading. Its screen is backlight and is harmful to our eyes for reading.

The Kindle is the best on viewing PDF files, and it is within your budget. It has done an upgrade recently on PDF handling:

http://www.amazon.com/gp/redirect.html?ie=UTF8&location=http%3A%2F%2Fwww.amazon.com%2Fgp%2Fhelp%2Fcustomer%2Fdisplay.html%3Fie%3DUTF8%26nodeId%3D200324680%26ref_%3Dhp%5Fnavbox%5Fkrec%5Fsu&tag=searchresult-20&linkCode=ur2&camp=1789&creative=390957

And I’ve compared the ebook readers in another answer here:

http://answers.yahoo.com/question/index?qid=20100706160939AAK0T9S

Guess it’ll help you decide.