Although I used Destroyer and found it helpful I think the DAT bootcamp and Qvault practice quizzes were much more representative of the type of questions that showed up on the real test.
Doing the bootcamp and qvault tests timed for each section also helped me more in terms of simulating what the real exam would be like whereas in Destroyer it's untimed and the questions are way harder then the real thing.
I would also recommend taking all the Chad's OChem and GChem quizzes and writing notes. Those tests were by far the most representative of the real exam.