I tested in January and I used the Kaplan quick-sheets one week before my exam. I thought it was pretty helpful; by no means is it sufficient, but it was a good review over some key topics. It definitely didn't hurt.
Other than that I used the full set of Kaplan books and AAMC materials for about 6 months. Scored a 516 (128, 128, 130, 130).
Good luck!