EXAMKRACKERS in my opinion provides the best verbal strategy. Exlawgrrl has it right: the main difference between kaplan and EK is that in EK, they instruct you NOT to go back to the passge, to use intuition and CONFIDENCE while reading passages, whereas in kaplan, they tell you to underline words, go back to the passage, etc. Both intstruct you to look out for "distractors", answers that are put there on purpose in order to F**k you up. I have tried Kaplans way, and i find EKs much better.
PM me if you have any more questions.