RE: H9 ultimate questions
Not familiar with the Hitec stuff, but I will say that it needs a lot of power on the rudder. I flew my buddies in am IMAC contest a few weeks ago and with 3 x 8611 (not 8611A) on rudder, I felt it was getting some blowback in certain situations.
Dont take this wrong, but most people wouldnt notice it so it was very close.