What are some really good books?

I love the twilight series and some of the Harry Potter series, i just haven't found another book that i've loved like twilight! What are some really good books. And ones that a 12-16 year old would read XD thanks. i really don't mind reading any book though i've just really loved twilight. I am a book worm tee hee and i can get pretty interested in a book. Please tell me your favorites!