Best books for SAT II Chem?

<p>I just finished the McGraw-Hill prep book and had mixed results (scores ranged from 650-760). I also have the Barron's book but the test there look wicked hard already .. what other prep books should I buy?</p>

<p>kaplan is really good in my opinion.
i;m planning on taking the sat II chem this june, and i've bought 3 books, and out of the 3, kaplan seems the best.</p>