I used the Naza V2 as the receiver on my quad because not only is the Naza V2 a receiver, it has a 3-axis gyroscope, 3-axis accelerometer and barometer and more. It also is common in multi-rotors and has “industrial grade accuracy” (as quoted from helipal.com).
You can buy the Naza at: http://www.helipal.com/dji-naza-m-multirotor-gyro-system.html.
