Try FMADirect.com for a great auto-pilot.

Price: $69.95


4 Sensor, 2 Axis Infrared Thermo-technology Flight Stabilization System maintains level flight for aircraft and heli. Stabilizes pitch and roll for almost any R/C aircraft.
Weight: 1 oz.
Ratings: Accuracy: 2 degrees
Applications: Stabilize any R/C fixed wing airplane, helicopter, special configuration

I've got one in my mx-400 and I never leave earth without it....
It WILL hover your heli hands off.

AB