I got this book to, obviously, prepare me for the AP Econ exams. What I like about this book is that it is very easy to read and the author does a great job keeping the reader focused with his humor and mnemonics. For instance, if the Fed wants to increase the supply of money circulated, the Fed would buy bonds: "Buy Bonds = Bigger Bucks."
I took a look at the Princeton Review version at my local borders (I actually compared the two). I get very meticulous when comparing due to my OCD. I didn't like the Princeton Review version because it didn't engage me as much as 5-steps. 5-Steps dedicated each chapter to a particular section, which made it very easy for me to organize the information in my head! The quizzes and key terms after each chapter also helps with retaining the information. Also, the test-taking strategy in the beginning and in the answers after taking the practice exams are very helpful. I like how it stresses on drawing BIG, easy-to-read graphs over writing long, time-consuming paragraphs.
I don't ever take the time to write reviews, but I felt guilty not to for this book after receiving my score yesterday (I got a 5!!!). That is one-less class I need to take at Wharton!!!