<p>What is it? Kaplan? Amsco? or some other company?</p>
<p>I found the REA one to be pretty good, didn't try any other ones except Kaplan though.</p>
<p>I used the AMSCO and I feel that reading it helped me achieve a perfect score. It has everything you need to do, and it doesn't go on about stuff you won't need to know. </p>
<p>Yes it does seem long, but thats because it has a bunch of random dbq's and test questions in the middle, so in all actuality it is actually quite condensed and gives quite a bang for its buck.</p>