Everyone is going to suggest different handguns, as they all have different preferences. Some like a Heavy gun, others like a lighter one, etc etc.

I suggest getting the gun locally, at a place called David's Gun room, off of Buford Highway.

http://www.davidsgunroom.com

Coworker buys all his guns there, and he says they have a SHITLOAD, and they rent them out as well.

He suggests a Beretta pt92, as there's not a lot of guns that can beat a Beretta in terms of reliability.

But as i said earlier, you may want to test them out before you buy them.