"The certification should be more project based like Lean Six Sigms a subjective exam, series of projects , research, etc then submission for grading by an ISC2 panel. In the real world, you dont get four choices."
You should consider taking the project management exam if you believe that it should be a 'project based' exam. And in the 'real world' one may find themselves having not 4, not 5, not six (my inner LeBron James) but a litany of choices. There are 'easier' exams out there to be had, one might consider those if one is absolutely perplexed. But as a certified professional, I have NO interest in this exam becoming another Lean Six Sigma, or Project Management exam. Getting back to my point - "Why Bother?"
The reason why multiple sources are good is because you get the same questions and scenarios worded differently. I found the ISC2's Flash cards to be quite helpful in that they got me to answer those open-ended questions in a variety of different ways. Once I sat for the test, I felt invincible. You will perhaps have to go through 700-1000 of them (depending on your experience). But by the end of it all, you will be bubbling over with confidence.