Nitro PDF Pro reader is not very popular among pc users. But it is a very good reader adn for me, it is better than Adobe Acrobat Reader. It has many features in PRO version which are very useful.
Advantages:
1) It is easy to install and not that much big in size like Adobe Acrobat Reader.
2) Its interface is very very intuitive and easy to use. Even first time users can use it comfortably. If u look at the Tabs/Buttons in the Menu Bar of its interface, u can have an idea what each button can do.
3) Select tool works great. U can copy paragraphs and paste them I n the Word document with ease. Copying a whole table is out of question though. U have to select the content of each cell of the table separately.
4) NItro PDF can create PDF files.
5) There are 3 separate buttons to convert PDF files to MS-Word, MS-Excel or Image.
6) Zooming tool works great.
7) There is a tool for editing the PDF also.
8) File association works well.
Disadvantages:
1) After the expiration of trial period, free version many times insist to purchase the Pro when u try to open a file.
2) It is not that fast like Foxit reader.
Not many cons are there. I can safely recommend it over Acrobat Reader.