i just retook the dat cause the first time i had computer glitch and i was able to retake it with a clean slate ( old scores erased ). new bio 21 gch 19 och 20 pat 20 rc 18 qr 14 disgusting. so many word problems. after reading comp. i was seriously sick of reading. i wish there was more simplifying type problems new aa18 ts20 pat20 old aa 18 ts 18 pat20 so everyone's been asking if its gotten harder. i took two dats within a one month span. its not harder, just different questions, with a few where you need to apply common sense. the boost from a ts of 18 to 20 wouldn't have been possible without destroyer. its all i studied in between tests cause i knew i missed things that were in it on the first dat. it just has questions that no other book has. its a must have, guaranteed. didn't really do anything to the pat, cause i think it just comes innately to people. so my biggest concern is qr, i wish i could have atleast kept that the same.