I agree with Tony, Dunwoody and Sandy springs are good areas to look at. I live in dunwoody and I love it, A lot of dunwoody is quite new and there are some lovely places to shop or to go out and eat. rent prices are ok if you let me know what you are looking for i can see what price ranges you are looking at. we rent and with no credit score yet we had to pay a deposit of an extra months rent.
I have found that i lot of things you normally need credit for you can get if you make a deposit. e.g. mobile phone contracts, renting appliances or even credit cards.
Again I agree with Tony about the freeways that does seem to be a big problem around Atlanta no matter were you live.