RF controlled servos

what would be the best way (i.e., simple&cheap) to control 4 servos remotely using an arduino?

option 1: use two arduino's, one to transmit (via some RF link) the commands, and the other to receive and control the servos. this could be accomplished in principle using cheap RF modules (<10$) like: RF Link Transmitter - 315MHz - WRL-08945 - SparkFun Electronics

option 2: connect the servo's directly (without arduino) to some 4ch RC receiver, and then control them somehow (...?)

any ideas/suggestions ?