I don't know if the personal trainer ones are, but the group fitness definitely is. The version I have focuses rather exclusively on old-school aerobics classes. (I was quite bummed when I got to that part, I have no desire to teach aerobics!) Apparently ACE has finally joined the rest of us and now has info on other types of classes as well.

I believe with AFAA certifications you actually do a practical as well, so there is more physical time invested in the training (but things could be a changin'). Personally, and let me first say I am a bit biased because I went with ACE, I feel that ACE has a better reputation and the exam is more challenging. Also because of my association with YogaFit, I prefer ACE. YogaFit and ACE have somewhat of a partnership and that has a lot to do with the fact that AFAA inappropriately used much of Beth Shaw's work (YogaFit creator) in launching its own yoga certification program- bad karma in the yoga world if you ask me. Beth is such an amazing individual and truly has a heart for yoga, animals, and bringing yoga to the world regardless of spiritual conviction, socioeconomic status, etc. Nutshell:save your money now and get the certification that is appropriate for your level of excellence.