What horse should I breed my mare to?

I have a Grey Arabian mare that has already had a few foals, none of them while i owned her. I would really like to breed her so I could have one of her foals. I am only going to breed her once, and she is purebred and registered with amazing bloodlines. I'm not just a background breeder, don't worry. If i did decide to breed her, what stallion should i breed her too? All i care about is that its an Arabian, has good conformation and personality, and is in the Southern USA. If you could give me some ads that would be great. Thanks!