I received a good question today: In addition to your 2016 Sample Problems and the 2004 Sample Exam. what do you think of the 2009 AND 2011 SPE/PE study guide questions?
My response: You have limited time, so make the most of it. And that is the 2016 & 2017 Practice Exams, the 2004 Sample Exam, the 2014 Practice Exam, and of course the Guidebook. First know those like the back of your hand.
Only after all that would I study the 2009 & 2011 Exams.