This is by far the best prep course I have taken. Unlike Kaplan and Test Masters which group types of questions Binary Solutions offers a break down of theory which can be applied throughout the exam.
Eva has thoughtfully put together a course in which you learn how to solve any problem and their many permutations. Furthermore Eva is always available and will go through the material until absolutely sure that you've mastered it. I recommend this course to anyone interested in a high LSAT score.