I used the Saunders 5th edition. I would tell you this, Saunders is awesome. I did not have money for the expensive review and all my books cost me close to $150 and they were new books too! I took 8 weeks to study for the boards. I read each chapter from Saunders based on the personalized study calendar from my initial assessment. After I study each chapter, I make sure I made notes of the pyramid points and then I review the chapter practice questions. For the next 2 1/2 weeks, I practiced questions with exam cram, Linda LaCharity PDA and NCLEX 4000.
What matters most is understanding the concept, learning strategies and believing in yourself. I know people who use them expensive review and still failed twice.