Thanks to all that responded so quickly. A ton of good info.

Just a few more questions if I dare ...

I have a JR X-347 radio. It is old but faithful. I have only flown aircraft on it but the manual says it can fly helis as well. Any problems with using that radio?? I guess I don't really now what the main differences are between a heli and aircraft radios.

Servo question. Standard servos like the JR 517 are sooo slow with 60 degree transit times of about .24 seconds? Would it be a good choice to go with something a little crisper even on a trainer.

Gyro/Gyro servo question. Does the gyro work the tail servo only? Is this why folks have a faster servo on the tail?

Thanks Again

Shawn