<p>For APUSH, I've seen that these 3 are rated highest, but I can only buy one, so which would be best?</p>
<p>Essential Content by far. That’s the only review book I used, but I read it several times. I got an easy 5 on the AP exam and a 770 on the SAT II Subject Test. AMSCO has way too much information. Don’t buy it. I don’t know much about REA.</p>
<p>AMSCO is pretty much an AP text book.<br>
REA Crash Course is nice, but it is very concise. I really think the Essential content is the best, as it is the perfect middle ground. PM me for PDFs of REA and AMSCO.</p>
<p>The Essential content is a great book for both the AP and subject test, though if your teacher is not that good, then get AMSCO probably.</p>