After hearing several positive things about Blueprints Psychiatry, I decided to go to the store and buy it. Didn't want to work too hard, didn't want to look like a total moron. Then I picked it up, and I think I've seen bulkier books written by another doctor (Seuss, that is). But brevity isn't necessarily bad, so I checked it out at the library instead and read it in 3 days of semi-hard studying. Yeah... I think should've gone with the other book, Green Eggs and Ham.
The problem with Blueprints is that it largely rehashes DSM-IV guidelines. That's OK, and it's a big part of psych, but you can get that with the Current Clinical guidelines pocketbook. What I was really expecting/wanting was something that (1) had bits of annoying trivia pertinent to the exam (2) more information on psychoactive drugs (3) described in more detail patient presentations and (4) discussed how other medical diseases could present like psych disorders. Blueprints skims these issues.
I would buy First Aid for the Psych Clerkship instead. It's a quick read as well but provides more info. I had a good score on the psych shelf, and I think switching primary sources had a great deal to do with it. If you like the Blueprints series, just check it out or borrow it from a friend. Blueprints Q&A, though, is an excellent question resource.