What are some good SAT practice books?

I would highly suggest taking Barron's because it is usually tougher than the actual College Board exam. This allows you to over prepare yourself, thus allowing you to score higher. Most of the books will cover all of the same material because the exam itself does not differ as much, but just the way it is taught. However, I do know that Princeton Review allows users to submit an essay online so professional graders can grade your essay, but I would highly suggest Barrons.