I had been getting little radio "bumps" from time to time at our field. I had been using PPM since it came out and had been fighting off going to PCM. Made the switch to PCM a while back and haven't had any more "bumps".

It's also nice being able to set the servos to go to a given point in the event of signal loss. You know what the plane is going to do if it happens. Not so with PPM.