Which prep book is better?

I am taking the AP Government Exam this year, and I want to purchase a prep book to make sure I pass. I have used the Princeton Review in the past for AP US History exam and I liked the layout, but I have also heard good things about Ethel Woods prep book, crash course, and 5 steps to a five. Have you used any of these or recommend other books? Thanks!

I highly recommend Crash Course. It’s an easy read (you can literally finish it in a day). I passed with a 4 thanks to it.