I looked into your profile and I noticed that you are a graduate and no longer a medical student.
So my advice for you is study Kaplan notes and FA and do not come near crush the boards.
This book is very good for very quick review in the case of medical student "hurry up" prep.
First Aid has better reputation
Yes FA has better reputation but I have found crush the boards extremely useful.
Specially early on in med school where you can add your notes to it.
This book according to my seniors has all the high yield info that we ever need for CK.
I am going to rely on it and I will not read FA.
This book is most famous in my circle and we'll all rely on it instead of FA.