What I am looking to do is wirelessly connect two modules at most 60 feet away from each other. One will have two buttons (or a analog joystick) which will send commands to tell another module to either increase or decrease the position of a servo
That's what model R/C systems are for.
I make an Arduino compatible board that combines an XBee with an 328/168.See http://wiblocks.luciani.org/ZB1/index.html
What is the difference/advantage over the Fio boards?