The nicest people in general I have met are from Texas. They are friendly, conservative, Christian, patriotic and good people.
In Georgia I found people were unfriendly or just had phony southern manners. In the South so many have that phony manners but will stomp you calling you sir.
Southern California is another layer of insanity. Everyone is in a good mood it appears. How can they not be with a sunny day every day and most have money but it's hard to figure out how they make it since so many I have met don't drive to jobs but work out of their house on their computer. In California you will soon find they are off their rockers. They are liberal, intolerant, hateful against anyone that doesn't share their ideology to the point of some being violent. In California it also appears to me that their are two classes. The filthy rich and poor. The middle class is almost non existent and fleeing the state. It's funny they want to leave the state but many bring their flaky California liberal values with them.
Those are my experiences with those three states.