This is what superseded the gya350,
http://www3.towerhobbies.com/cgi-bin...&I=LXVA43&P=ML
The description is straight from Futaba
i've used the Spartan Quark and in my opinion it may be overkill for just a rudder application. This is based on the handful of adjustable parameters it has. However, you may get lucky with the default settings. In a rudder application it's either on or off, and so most of the time all those customizable parameters are of no benefit.