Comparing a book with its filmes version

I need help for a presentation I have to do in school. I have to compare a book with its filmed version, but I don't know which book I should choose.

I've already read:
- The Twilight series
- The Last Song
- Dear John
- Confessions Of A Shopaholic (1-5)
- The Vampire Diaries (1-5)
- Christine (King)
- P.S I প্রণয় আপনি

These are the বই that I picked out, but can someone recommend any other books? অথবা tell me which book is the best choice?