I share your concerns about Southen Air. You would think "one person" would say it's a good place to work.
I've been digging around the past few days and talked to several people who have worked there (the place I got my Type Rating contacted several of their graduates who went on to fly with Southern Air for me), regretfully everything I heard from them has been negative. They have no ax to grind, they just thought the working and corporate environment was not condusive to a positive work atmosphere, therefore moved on to other air carriers where they are now happy to be at.
I'm looking for a New Years Day miracle that another air carrier will call me before the interview next week.
In all do fairness for pilots who really want to make Southern Air a career choice, I don't want to go to an air carrier then eject on them right after I get in, should another air carrier calls. At least you have a choice.