Dr Martin's review was recommended by my school. They actually required several students who did not meet the targetted hesi score to attend Dr Martin's review before taking the NCLEX. I passed the hesi but decided to take the course to boost my confidence. I took the review course in Chicago. Dr Martin is brilliant and she does not taking any bs. You have homework and if you want to do well and get your money worth, you must do whatever she tells you to do. She is from the Philippines and at times has a heavy accent. She goes over everything in her class. The class is worth it. This class is especially helpful for students whose first language is not English. Dr Martin does a very good job at breaking down the questions and helping you understand what they want and find the best answer.
I passed the NCLEX after the 75th question and threw away all nclex related stuffs. Best of luck to those of you who are studying for this test. It is just another hurdle before you get your license. You can do it.