Hello Trish. This is a question that has been asked quite often on this site (you may want to search for prior answers here as well). To my mind, the answer really depends on YOU. There are so many certifications out there, and so many factors to consider. For example, your budget, the educational requirements for the certification, the recognition that the certification has or will receive from any potential employers in your area, Continuing Education requirements, the ‘support’ that the certifying agency gives to its members such as forums, articles, continuing education, job listings etc.
Take a critical look at each organization that you’re considering and make your decision based on your comfort level. A word of caution: as Karin says above, all things considered, your best bet may be to go with a certification that is NCCA accredited, although that is NOT an absolute necessity. Good luck!