I highly recommend delivering at Northside Hospital in Sandy Springs. This place is rated as one the best baby delivering hospitals in Southeast. Also, if you plan on breastfeeding, Northside has an awesome staff of 90 lactation specialists to assist you in the breastfeeding process.
If big hospitals arent your thing, I've heard lots of good things about Kennestone Hospital in Kennesaw. Their lactation staff is smaller than Northside's, but still very good.
If you find that you are still unsure about what hospital to use, try looking online for classes/tours taking place at local hospitals (this is how I was able to choose Northside over Kennestone).
Good luck!