I started my PMP study from Jan,2014. I got my "one-take-pass" t in April, 2014. I purchased the PM PrepCast (For PMBOK Guide 5th Edition) and PMP Exam Simulator from the OSP International LLC only. Also, I purchased a PMP mock exam book from Amazon.

My experience is that don't use too much time on preparing your PMP exam. If you decide to take the exam, prepare it hard within a short period. For me, I used 3.5 months only. When i start my PMP study in Jan,2014. I scheduled my exam in April, 2014 immediately It was completely a motivation to push myself to study hard. (of course i felt stressful to my schedule) . Preparing the exam was just like executing a project, you need to have your own study plan. Also, you don't need to study the PMP day and night. For me, I read the PMBOK guideline when I was running at gym room. I took some mock exams when I was free at home.

When studying the PMP PMBOK, try to understand it, not memorize it. In the exam, don't waste lots of time on one question that you think it was difficult, you must MARK it and come back to it if you have time.

Good luck guys. Wish I could give some helps.