The book that received thumbs up from 65% respondents and is a runaway winner is (no marks for guessing this) Rita Mulcahy's PMP Exam Prep. This should not come as a surprise to anyone. The distant second is Head First PMP with 18% votes.
Best PMP Exam Prep Book Survey Results
The results of the survey are pretty much in-line with expectations. However, from what I learned over the past several months, Andy Crowe's The PMP Exam: How to Pass on Your First Try is at least as popular as the Head First PMP book. Unfortunately, Andy's book wasn't an option on my survey (call it my ignorance).
If you have other recommendations for good PMP exam prep books, do post your comments. Thanks to all who voted on the survey.
Related Post: 10 Reasons to buy Rita Mulcahy's Exam Prep Book.