I live in Atlanta and depend heavily on Chowhound boards when travelling. But I recently checked out what the board said about my hometown and thought there was too much about The Varsity and then "southern food" recommendations like Carvers and Mary Mac's and Silver Skillet, all of which will hurt your tummy. Oof. If you really want it, save this type of thing for right before you go home, just so you can say you did it - otherwise you might ruin the rest of your time here.
There are a bunch of pretty expensive places recommended (Bacchanalia is amazing, BTW), but if I lived somewhere else and were coming here, this is my short list of the type of low and middle-brow recommendations I would be looking for:
Ciao Bocca (humble Italian, lunch only, a counter in the Sweet Auburn Curb Market)
Duck's Cosmic Kitchen (soup and sandwiches, plus awesome doughnuts!)
Five Seasons, the one in Sandy Springs (great brewery with excellent food)
Hankook Taqueria or Yumbii food truck (unique - Korean/Mexican/Southern)
Tacqueria Del Sol (*not* authentic Mexican - very interesting and delicious)
Tamarind Seed (Thai)
Vortex (Hamburger - Little Five, not Midtown location)
Woo Nam Jeong (Korean)
Any other Atlanta natives like to chime in?
1175 Peachtree, NW, Atlanta, GA 30309