Due to unexpected emergencies, I only had a couple days to study for comlex 2. I found only two books to be essential:
1. savrese OMM board review (the blue book)
2. Swanson's family practice review. This was ExcELLENT! very high yeild for the comlex. I owned all the other step two books: first aid, prescriptions, crush the boards, etc. but Swanson's was by far the most educational and most useful for the comlex. However, i do not think it would be the best choice for the USMLE.
regards.