<p>Haha, I can’t take credit for that. Its a compilation of posts by a ton of people, first compiled by RockerMcr</p>
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<p>I used both, and I found them equally helpful. The Barron’s has more facts and is better for getting a higher score but the Princeton Review is easier to read. A combination of both would be really good though. In my own case, I had only taken AP Euro and then took the World History Sat II and got a 730, although that was partly because I did not finish the review books. I think that if you use both you will get a 750+ easily.</p>