LSAT Prep Books: Logic Games Bible, Reading Comprehension Bible, Logical Reasoning Bible

I heard good things about this “Bible” series, especially Logic Games - would you all recommend purchasing all three of these books? Also, should I get the latest edition and are used copies okay? If the books are almost all learning strategy by reading, used copies work for me, but if there a good amount of practice exercises, then I would prefer a new copy. Which way should I go?

Not all used copies have writing in them. You just need a clean copy, not a new one.

@Hanna Thanks - would you recommend clean copies, or copies with writing in them? I am not sure what the format of the books are (and they were not available in my local library or bookstores to look through). If a lot of it exercises/practice sets, then writing will be distracting, if it is just strategies to be read, then writing will be fine.