kajrah07,
I was under the impression that the AAMC practice tests were very similar to the types of questions you will see on test day, but I was rudely mistaken May 31. I found the real exam to be much more difficult and my score reflected that.
I was regularly scoring 30-32 on the AAMC practice tests and did not come close to that on May 31. I originally thought that the verbal reasoning section was fairly close in difficulty but that the PS and BS section was tougher than the old tests. I was wrong about the verbal as I did horrible on that section compared to how I was scoring on the AAMC tests, I guess there must have been alot of verbal geeks taking the test that day, or I had a total brain fart.
Anyway, the moral of this story is that don't use the AAMC tests as the ONLY tests you take, like I did. They are definitely helpful, but don't use those scores as an absolute judge on how you will fair on the real MCAT. I am retaking the test in Sept and am trying to get ahold of some of the other companies full lengths for more rounded approach this time.