I took Kaplan, their customer service was awful where I took it, they moved their classroom location to a different site that they had advertised because it was more convenient for the teacher but it left people like me without cars scrounging for rides. Their practice tests were pretty good, their books were not that comprehensive though. I actually borrowed a princeton review book and studied from that, even though that probably had too much information, I prefered TPR's books. Good luck deciding, you don't have to take a course to do well but it helps.