<p>From past test takers, how do the Princeton Review, REA, and Sparknotes Books fare?</p>
<p>I've borrowed them from my friends and am wondering how good are they? LOL, i forgot all this elementary material because I am in Multi Variable Calculus, and am taking the test in a week. Needless to say, I'm more of a history person.</p>
<p>How are these books, and is the real deal generally harder than these books? I know Barron's is always harder than the test (that's cause they never edit their books the content not tested and update every 4-5 years!)...</p>