Troy,

The HS-5065MG sounds correct. If you want the best gyro then that would be a Spartan. I hear they sell out very quick if you wanted one. I have had no problems with my GY401. I can't remember the model number, but one of the Logitech gyros is also just as good or better than the 401 and it is lighter and smaller. The JR 770 gyro is also pretty good, but I hear it is hard to set up. The 9257 is faster than the 9650. I have used both and prefer the 9257. For a tail servo you want the fastest one you can get. It doesn't need a lot of torque and even less if you are using the Chineese weight mod which I have on mine and that makes the tail behave so much better.

Nick