2011-2012 vs. 2013-2014 PR Physics Subject Tests Books? If PR isn't best, then what do you think is?

<p>Okay so I'm shopping around on Amazon for Physics subject test books and there was something weird: the 2011-2012 edition of the Princeton Review physics subject test book had a better rating than the newer 2013-2014 edition. This leads me to my main question: Should I get the older book over the newer book? I'll be taking the actual subject test October 2015 since I'm only in AP Physics 1 right now and obviously don't know enough yet and plan on self studying over the coming summer. This being said, should I wait for a newer edition of the book to come out at some point or hop on to whichever book is best at the moment? And since we're on the topic of the physics subject test, which book do you think is the best available?</p>

<p>Just get the new one when it comes out early next year. You have plenty of time to prepare, so don’t rush it right now.</p>