I've been using QB for years. The largest business I know about that uses it is a client of mine, a futures fund LLC managing over 2.5 billion dollars (They us

I've been using QB for years. The largest business I know about that uses it is a client of mine, a futures fund LLC managing over 2.5 billion dollars (They use it to manage their business accounts, not the client's money for which they have vast amounts of proprietary software).