What Marine SGT said.
I live in the St. Louis Area, so shipping only takes 2-3 days from AirsoftAtlanta. They also have a much better selection of internal parts, with almost a full selection of Guarder FTK's and other parts. I love Guarder parts, so being able to get them in a couple of days compared to a week or more from airsoftgi is great.
They also have a much better boneyard, as they include accessories in many of the guns, which makes reselling them
Airsoftgi is great too, as they will have some products that Airsoftatlanta does not have in stock at the time. I also find them to be better for buying guns, although the only real problem I have ever had with them was that my MK43 came tradeless. If that is the only thing to go wrong after many orders, they must be doing something right!