Destroyer is overkill but if are able to get through it legitimately then you WILL laugh at the real DAT. Chads videos are good. I went through them pretty much just once and would only watch parts of videos for what I needed to recall. The best thing you can do is just do problems. For that I used qvault. Hit every quiz, review, and then they break each topic down with question banks. Do them all and youll be fine