Buy a real estate franchise or start your own?

[Dave K.]

My wife is a broker, working for a big name real estate company, and we have been thinking of starting our own brokerage for a few years.   She has been self-employed since she was 21 as an agent and later a mortgage loan officer.    A few years ago, while raising babies, she got her bachelor degree and broker license.   The question that we are unsure of, is if we should start our own brand, or buy a franchise (c21, remix) etc..   We like low drama and low corporate BS, for now..