Crazy Mike:

The type of flying you do will determine what servos you need. For radical 3D flying, I think you will need the high torque servos previously mentioned. If you use standard servos, just reduce the throws on the control surfaces. Make sure you are using near 100% output on the servos, usually about 45 degrees each way. Reduce the control surface throws by using long horns on the control surfaces and short servo arms. This will reduce the load on the control surfaces (less deflection equals lower load) and increase the mechanical advantage of the servos. You can always upgrade to stronger servos later and easily change the linkages.