bootcamp's GC is pretty on par with the actual DAT, maybe with the exception of being SLIGHTLY more difficult. honestly, don't preoccupy yourself with the fact that the questions are drilling some key concepts into your reflexive memory in a difficult way... you'll be glad it did. after doing bootcamp's GC and chad's quizzes, the actual DAT's GC section was like second nature to me because of how well bootcamp/chad's forced me to internalize key concepts/types of questions.