The latest standard for networking gear is known as 802.11ac. Devices that conform to this standard offer Wifi that conforms to both the 2.4 Ghz, as well as the 5 Ghz standard. Most of the new networking gear that is being introduced, conforms to this. It offers the advantages of less interference on the 5 Ghz frequency, and faster speeds.
The only real downside of the 802.11ac devices is that not surprisingly they cost more than the previous stuff, the so-called Wireless-N. While one approach for the cost conscious is to purchase a previous generation device, the Netis WF2710 offers a way to get into an AC router, for a price that is even lower than some Wireless-N routers. It is currently available at NewEggfor $39.99.