Hunger Games, Divergent or Fahrenheit 451?

It wasn't until after I'd written The Boost that I learned it was dystopian. I just thought it was a book about the future, both good and bad. Now I'm interested in catching up on this genre I participate in. I searched dystopian books on Google and found a few I'd read--and a bunch I haven't gotten to yet. I'd welcome recommendations.

Here's what I've read:

1984, by George Orwell. Beautifully constructed book, pervaded by grimness and despair. Very few laughs.

The Road, by Cormac McCarthy. Much like 1984, but post-apocalyptic. Love persists.

Brave New World, by Aldous Huxley. Read it in high school. Only remember the drugs.

Let's stop the charade. I'm nearly unread in this genre. I took Fahrenheit 451 out of the library, but didn't read it. I saw the movies of Never Let Me Go, The Children of Men and A Clockwork Orange. Which dystopian books should I read? Hunger Games? Oryx and Crake? Divergent?

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Incidentally, looking for the links to these books, I just came across the Amazon interview with Veronica Roth, of Divergent. She gives a nice piece of advice to writers:

"Want something else more than success. Success is a lovely thing, but your desire to say something, your worth, and your identity shouldn’t rely on it, because it’s not guaranteed and it’s not permanent and it’s not sufficient. So work hard, fall in love with the writing—the characters, the story, the words, the themes—and make sure that you are who you are regardless of your life circumstances. That way, when the good things come, they don’t warp you, and when the bad things hit you, you don’t fall apart."