I've got some...
we moved from the Midwest over ten years ago and are very happy here...
the cost of living will probably be pretty attractive depending on where you're coming from, and you may really like the home you can afford.
Our climate is wonderful....hot Summers, be ready for that, but we get four seasons, a mild Winter...we may see snow, we may not, but if we do you probably won't drive to work until it melts.

While we get cold weather it is interspersed with mild breaks. People play outdoor sports year round here. Our Falls and Springs are usually spectacular, with weeks and weeks of color and wonderful outdoor temperatures.
Atlanta is nicely located such that it is easy to get away to the mountains or the beach for a weekend. We just had a wonderful weekend in Hilton Head a couple of weeks ago.
The northern area of Gwinnett county is very suburban, yet you have access to Atlanta and anything you might want to do in a city is available there.
On the flip side, our traffic is legendary, so live near where you work, all of that gorgeous color can play havoc with peoples' allergies, so be prepared.
I don't live in Gwinnett County, but am near it. PM me if you want any help with areas to live... Gwinnett County is very diverse and while ten minutes from the office one direction might be perfect, ten minutes the other direction might feel strange. I don't know if schools are an issue, but they are something to consider as well. Of course, your realtor could help you as well.