Just to add my 2 cents, I felt it was helpful. However, when I prepared, I used a combination of Spiegel, BTB, and Board Vitals. Expensive, I know. But I sure as hell did not want to take that test more times than I needed to. One thing i liked about BTB where actually the lectures. I listened to them in my car. So it was an easy way to learn, especially if you are a parent with very limited time. I did quite well on the boards but also started preparing nearly a year in advance. Those lectures take awhile to get through.
