Financial Modeling 2nd Edition by Simon Benninga or Financial Modeling 3rd Edition by Simon Benninga?

The 3rd edition has 6 extra chapters compared to the 2nd edition. But is there any REAL difference between the two?

Here is the website of the 3rd edition. http://finance2.wharton.upenn.edu/~benninga/fm3/fm3.html

The website for the 2nd edition is can be viewed via Amazon.com. You can view the Contents page and compare it to the link above (3rd edition link)

THANKS :]