I passed the PMP exam on the first attempt last week. In my experience the practice exams provided by PM Prepcast have been very realistic and relevant in simulating the time pressure and complexity of the questions faced during the real exam. In the real exam however, the questions were somehow not as long worded as I had practiced them, which was a good thing. I experienced that out of total 4 multiple choice options 2 of them were very similar and correct. Therefore, I applied the elimination method provided in every answer of the PM Prepcast prep exams, to eliminate the least correct of the final two options.
By the way, I also studied other material (books) but the PM Prepcast was the closest to the real exam in terms of difficulty. So it is worth the investment.