Hi,
today I have successfully passed my PMP exam (1st attempt) - apart from the PMBOK Guide and the PM Prepcast, I think the PM Exam Simulator was the most important tool for me to prepare for the exam. During the last 4 weeks before the exam I focussed almost entirely on answering as many questions as possible in the simulator - I took a lot of quizzes (blocks of 50 - 100 questions) as well as 3 complete exams. Apart from getting used to the type of questions and being able to quickly filter the relevant Information it also helped me to get a feeling regarding time and time management.
I think the PM Exam Simulator is really close to the real exam - on one hand the way the questions are formulated and on the other hand features like being able to strike through answers.
Best regards to Cornelius from snowy Switzerland!