Degreeinfo is much better for graduate school information in my opinion. The participants there are also really varied: they're students, educators, employers, etc., so the feedback for work-related purposes is great. For testing out to get a bachelor's degree though, the InstantCert forum is absolutely amazing. In the relatively short time since it went up, the amount of data provided by people who have taken the individual tests has been phenomenal. I was over halfway through the testing I needed to do when this forum was created, so I can testify to the fact that being able to find out how people studied and what was on the tests makes the process much much easier, and less intimidating.