Honestly , I believe that if you use any source and study , in addition to practice on exams , you should be fine,so you will need to make a decision . Me, my self I decided at frist that I am going to use kaplan,because I liked the organized way of the book, untile I took the rx prep review course for free with rite aid then I liked their book because the way they highlight and stress on the important info.so you will have to study any sourse thoroughly , you can' escape any chapters.one of the things I liked about their review what one of the ladies said at the begining that whatever technique , you been using on studying , keep on using as it is proven it is working because it got you here.so good luck and keep coming back , till you make it.