wireless router n dual band

What is best for my 360 dual band wireless n gaming adapter or wireless router G.?

Ok when I am playing xbox live during half of a game a connection error comes up and out of the game i lag. I have Roadrunner and live is connected to my TWC modem and Netgear. Just wanted to know I was thinking of getting the Linksys Dual-Band Wireless Gaming Adapter-N. Would that work out? Or do I have to get a Linksys Wireless G router. Any help?

linksys router g Wi-Fi connection works perfect

D-Link DIR-825 Dual Band Wireless N Draft Router

router

trendnet TEW-671BR Dual Band Wireless N Router