<p>Princeton Review seems to have the most "realistic" practice tests.
Barron's has okay material, but some of the practice tests are just bleah(especially IIC, good heavens)</p>
<p>So what are you guys' opinion on the prep books to these three AP subjects?
Also, do the prep books have sufficient material for self-studying if the subjects are nearly fresh to you?
If not, please suggest a few other books I could use with the them.</p>