I've taken the cDAT 3 times over the last 3 years, and trust me when I say that there is not a SINGLE resource that is representative of the RC on the cDAT. RC used to be relatively doable but nowadays they have completely changed it up. I tried 4 different resources and none were an accurate depiction. It comes down to how good you are at speed reading and comprehending, cus Idk how you'd be able to SnD the RC these days, practically impossible (so many tone/inference questions). As for PAT I like bootcamp the best.
Cheers.