Comparing the 2 booster is way more representative of the actual dat. If you want to do well use booster because the questions are a lot similar to the actual dat. There are some questions from booster that are almost word for word on the DAT. All the sections are similar but I think it helps the most with the biology section make sure to know and understand why your getting your questions right or wrong in the bio section and you will be set for the exam. Good luck!