Which router should I get?

Okay, please tell me which I should get. Should I get a D-link DIR-655 Extreme N Gigabit router or a D-link DGL-4500 Xtreme N Selectable Dual Band Draft 802.11n Gaming Router? I mostly need it for my xbox 360 and i want as less lag as possible. The DIR-655 will cost me $60 while the DGL-4500 will cost me $100. Or if you guys recommend any other routers please let me know. I watch videos like themarkofj who have no lag online. I want that kind of same of connection. Thank you for the help :)