The OG is definitely a good tool. I can tell you about the Kaplan verbal
or Nova Prep books but I used MANY different books. From my own experience, I can advise you to use OG/Kaplan800
2004 with the 4 CAT tests and PrincetonReview with the CD also. I also used Barron(with cd)/Arco/Peterson and although they were useful in expanding my thinking on certain types of problems, I would not buy them again if I had to study that all over again.