Way back in the good old days my favorite book series was Harry Potter. It had an amazing plot, the only part I disliked were the ending pairs as I had kind of wanted Harry to pair with Hermione.
Atlas Shrugged, Ayn Rand. This is the life-changing book literally. I love everything about this book and especially the philosophic part. Characters are amazing. Unfortunately my English is not so good to describe fully this book. But If you are interested you can find a lot of reviews in google.