Buy DAT Achiever. I averaged a 22-23 Kaplan and got a 17 on the real thing. So far, the best material I have found is for the PAT is DAT achiever; not to mention that the other sections are great prep as well. The Reading section is comparable to the real DAT, the QR is just as hard or harder, and the science sections are definitely harder but are very good prep because if you can get a 18-20 on DAT Achiever you are ready for the real test. The PAT also comes with 3D explanations to help you visualize the shapes. I also bought Ace the DAT and had one practice test left over to take from my first DAT. When I took my first DAT I barely could get a 17 (53 right) on Ace the DAT, now after I used DAT Achiever, my score was a 19 (66 right). I believe it can get you a good 1-2 point jump. Try to develop techniques for each section to get the right answer fast. However, the key for the whole test is to remember to think. I know that hurt me the first time. That can save you a point or two in every section. Dont rush through when you think the answer is obvious because some questions have a little twist that can be easily overseen causing an incorrect response. Good luck and buy DAT Achiever. I wish I had the first time. Topscore is also a good source for the sciences and extra PAT practice although its PAT is somewhat too easy. I saw a 2-3 point drop from my real DAT as well as my friend did.