I have a question. I have about half of the certifications that the ISSA offer. I have recently called around to a few places to see what they prefer in their trainers, and they will not accept ISSA certifications. Why is that? From their history and the content that I have learned, they are great courses. Why are they not as highly regarded as ACSM or NASM? Am I berrea off going through a different certifying company, and if so why?