The latest version of Destroyer is better as it has more questions.
For example, I had 2017 Destroyer and 2018 destroyer, and in bio alone, there were about 80+more questions. and same applies for other sections, there were like 45 more questions in gen chem and I don't remember how many questions for orgo. Also, the math section at the end included the new math questions.
It's only 50 dollar difference, we pay more than that when we go to the grocery.