5th'd. At that price there's really only one or two good options.
Apart from getting the fastest 802.11n router with great range, it's reliable and you get lots of extra features too:
http://www.asus.com/Networking/RTN66U/
http://www.pcworld.com/article/20282...me-office.html
The only thing that beats it really is an 802.11ac router, like the Asus RT-AC66U, but then you're talking a heap more money for a router that most of your devices won't benefit from yet.