[Skunkworks] Long Distance WiFi Router

Hi guys, Does anyone deal with or know where I can get a long distance wifi router to provide a range of about 50m radius and with good speeds. I am looking for something that can allow me to access a network between 2 buildings. I saw this device and thought something like this can help me: http://www.ampedwireless.com/products/r10000g.html Have a great day! Warm regards, Amarjit Singh Labhuram.