COMLEX II is a joke. realistically, it is not going to be used toward your residency application (unless you are military), so all you need to do is pass it. that being said, it's probably an easy to pass, but hard to beat, exam.
the thing is, when they start pulling out shy-dragers syndrome (or however you spell it), and other trivial ****, most people are going to get those questions wrong, too. not to mention the differences in clinical experiences and protocols students get exposed to on rotations. no two people have the same experiences, yet they have to be tested on the same thing-- which forces them to standardize the test to a point that most people with basic clinical knowledge will pass. over half the questions were "well, duh" type stuff. yes, the other half is hit and miss, but if you cover your bases with a good step II review book, skim through some OB/Gyn, peds, FP, and especially ER, then go through a good questions book like NMS you'll be fine. OMM i thought was mostly very clinically relevant, about half parasympathetic/sympathetic innervations, a quarter diagnosis, and a quarter trivia. get savarese.
so, to review. step II review book, step II questions book, savarese, and whatever peds, OB, ER, and FP text you feel comfortable with.
study MAX 2 weeks. you're not going to be teaching yourself anything-- it's basically a review of most commons, with a few zebras and mongolian striped ass apes to keep you on your toes.
realistically? study a week or so, pass it, graduate, and move on with your life