I don't know much about 30331. It's about 15 minutes from downtown; about 20 minutes from Midtown. Not far from Vinings (15 miles).
If you have kids, Midtown/Downtown is a BAD idea. If you are single (20's), making a good salary, Buckhead is good. If you are a single ***, Midtown is good. If you want to save money, and meet young 30-somethings, you might want to look at Vinings:
http://www.rent.com/rentals/georgia/atlanta-and-vicinity/atlanta/vinings/
Vinings is very safe and affordable, with a great mix of all kinds of people.
"Hearts will never be practical until they can be made unbreakable."