A CPA must follow specific ethical guidelines as well as follow a published code of ethics. In addition those accountants working in private practice, as well as those working in large firms must carry their own liability insurance and must follow all requirements to maintain their certification and continue their practice.
Accounting is crucial in any type of business environment. It does not matter if you are hiring a professional firm to do the work or looking for the right software. The bottom line is that you must get the highest quality, most accurate and user friendly choice available to you because without your business funds, your business is not there.