<p>I just bought the revised PR AP Biology for 2013 and it seems to me that it is seriously lacking in detail. I really liked the Cliffs AP but ended up going with PR instead because it's "revised" (but is it even helpful? I don't think so). I figured that the new curriculum emphases would be updated along with the format change and all that, but upon flipping through it a second time, it doesn't look all that good.</p>
<p>So should I go back and exchange this for Cliffs? That one looked so much better, but I just don't know if it will have, specifically, what the 2013 exam will emphasize.</p>
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