I have both books Ek orgo and kaplan orgo. Kaplan(15 chapters) seems to have ALOT more info than EK orgo(4 lessons). I have read kaplan chapters 1-5 However, With time remaining until the test date, I am getting overwhelmed by the amount. I am thinking of switching to EK. So for those who used soley used EK orgo. Did you think it was sufficent? For those who used kaplan, do you think its too much? thanks