well there really is no such thing as a "gaming router" the question I guess you are asking is what is the best routers, and I think that goes without saying. The best routers are made by Cisco and are not cheap. For something like running a gaming server and a home network, cisco equipment, for most people, is totaly out of the question. In this case a linksys OR linux box doing NAT would work perfectly fine (degrade of performance but better reliability if you used linux doing NAT)