IMHO, Southern is having some issues hanging on to people (translation: people are quitting, even with the training bond) Not sure how many people have quit at World, but I dare say it is a pretty small number, as for Southern, I lost count when I ran out of fingers and toes. I have several friends there, all saying the same things, it is just a temporary place to be, they are ALL keeping their resumes up to date.

Full disclosure, I am biased here, I turned down a job at Southern to go World.

Wild card might be, SAH has scooped up a batch of folks from Kitty Hawk, many are great quality, might make a nice improvement there, but YMMV.