I believe that all who have used the Destroyer will agree that getting the latest version of Destroyer vs. the October 2007 version will NOT be the difference between "rocking it" and not. It certainly can't hurt to have the most recent update, so it is really up to you as to the value of the item and your ability to pay.
If you are unsure, I would say to buy it. The extra bucks it will cost you will be more than worth it if even 1 question ends up coming from that new material.
Good Luck!! 👍