In my personal opinion I felt the 2009 DAT was EXTREMELY easy compared to the real exam. The bio questions were more straightforward, where on the actual exam you needed to apply concepts. The PAT is also very outdated. The real exam was MUCH more difficult than most practice exams. I suggest using bootcamp to prepare for the PAT section. It was more similar to the actual exam. Overall I would just use the 2009 version to test your knowledge of topics and see where you should continue to review.