I want to prepare for the SAT and am planning on purchasing a study guide that will have good explanations, examples, practice tests, and vocabulary lists. Id like to buy only one that will be enough. Im thinking of buying Barron’s SAT 2400. Any suggestions and experiences? tips? all will be greatly appreciated :]

I want to take the SAT in the spring and want to get 3 or 4 books to study. I know for sure I’m getting the "Official SAT Study Guide" and I’m going to need the "Hot Words for the SAT" so I need opinions for which other book I should get. My GPA isn’t so strong so I need good SAT scores. Here’s my list:
-Official SAT Study Guide
-Hot Words for the SAT
-Cracking the SAT, by Princeton Review
-Barron’s SAT 2400:Aiming for the Perfect Score
-Barron’s Critical Reading Workbook for the SATs
-Cracking the SAT Math 1 & 2 Subject Tests
Anyone who’s taken the SAT, which book was most useful? and is it necessary to get SAT Subject Test books to study?
I took the SAT last Saturday (March 1st) and Im thinking of take it again. . I own The Official SAT Study Guide by collegeboard but I want to buy another one. (I have a 2.9 GPA)
Which one is better for the SAT test prep?
*Kaplan SAT 2008 Premier Program
*Cracking the SAT, 2008 Edition by Princeton Review
*How to Prepare for the SAT: 2007-2008 (Barron’s)
*Barron’s SAT 2400
Other?