Grubers SAT 2400 vs. Gruber's Complete SAT Math

<p>I need help in math (current score is a 630, NEED it to go up to a 700+), and I have heard that Gruber's is the way to go. However, if I need to brush up on some concepts, which one should I use. I also have Dr. Chungs math book, but it seems somewhat too nebulous at times, and I don't have the time to go through the whole book. Please tell me what worked for you, and what I should do. Taking the SAT on March 10th. REALLY NEED ADVICE!</p>

<p>I used the Grubers COmplete SAT guide 2011. I found the Math strategies very helpful.</p>