Passed on the 1st try! Got a 687 out of 800!
I just took the ACE test on 3/13/2010.
I spent 6 months preparing for this exam and did so by purchasing the Deluxe Personal Trainer Self-Study Course Bundle and following the 20 week study schedule and then spending a few extra weeks reviewing. Unlike a lot of other posters I did not take any of the review classes. I just spent 1-2 hours a day studying during the weeks I was covering the chapters in the manual and then 3 hours a day the week prior to the test. I had no practical experience in the fitness industry other than my personal journey to better health where I lost and have maintained a 100lbs loss.
There were a lot of questions that give you information about a client and then you have to choose the best course of action. So just memorizing the facts isn't going to necessarily help, you need to not only know the facts but how to apply them.
Good luck to everyone out there taking the test!