thats of course a person preference, but im a fan of EK's method. I took Kaplan last time around and my score didnt budge, which was sooo frustrating. Now, im using EK and altho i dont have an official score, i do see myself improving. But hey, different approaches work differently for each person. Verbal is definitely the hardest section for me, but i think no matter which strategy you use, u gotta stick to it, and practice like there is no tomorrow...