The aa.com game server runs off of xgs gaming.
They offer very good prices and the ability to stop start and reboot your server without having to email the provider
They can be reached at:
http://www.xgamingservers.com/
There customer service has been top notch. Better then the last provider I was with.
Good luck in your search. A word of advice. pay for your first month only. Feel them out b4 paying for a number of months in advance.