Southwest Mississippi. You can't be too far from me, so I'm assuming we're similar in a lot of aspects. I used to be a big supporter of bermuda, and still am b/c of it's higher quality than bahia, but bahia has one HUGE advantage: drought resistance. This year alone was proof enough; no rain for two months and all of the bermuda was long gone. The bahia was still green and growing. I have both native bermuda and bahia. Maybe certain types of bermuda would be more drought resistant, but I don't really want to mortgage the house to plant a pasture.
So I'll vote for bahia, but won't turn down the native bermuda when it shows.