Sorry about the late reply. Been gone from working so much.
I thought that the Destroyer had a good amount of relevant questions but all of them were already covered on other sources (chads, barrons, cliffs, bootcamp, etc). The real problem is that there were many questions that were way too specific and out of the scope of the DAT. I actually made a word doc listing all of the information from Destroyer not found in any other source I've used. Not a SINGLE piece of info exclusive to the Destroyer was on the exam (stuff like Dieckmann Condensation, Double dehydrodehalogenation E2, and diazomethane's structure and rxn with an alkene). And I spent a good deal of time trying to understand all of them.
Bootcamp's GC and OC sections were too easy for me. I scored 4-6 points higher than the actual test on each practice test. But in retrospect, I think I got some really insane questions on GC/OC on my DAT.
Bio had a lot of random questions but so did the actual DAT so I won't judge it. Bio is just really random, some DAT questions I got were not covered in anything I used or could have used.
PAT was very helpful and similar to the DAT.
RC felt really difficult compared to the actual DAT. I got 8 points higher on the actual DAT than I did on the RC practice test averages.
QR was a bit more difficult than the actual test but I think that this helped me with utilizing my time wisely.
I also realized that some sections on Cliffs and Barrons were way too detailed. Please don't spend all your time memorizing the stuff from Kingdom Protista or the Plants section. Actually just skim it and never look back.