Dilemma: SAT II Chemistry (Princeton or Kaplan, in addition to Barron)

<p>I am planning to buy Barron for sure as a last touch.</p>

<p>I have 2003-2004 edition of Princeton Review.
Then should I just buy Kaplan, </p>

<p>or is the new version Princeton still better?</p>

<p>oh actually never mind!</p>