Interesting to me that most all the complaints come from the Spektrum radio users... doesn't Savox make the Spektrum servos? I know they make Align servos which have been flawless for me, even with a Spektrum Heli system.

As for the noise, the noisiest servo I have had was a hitec. It was super noisy... ALL the time.. that thing sucked! Haven't used that brand since. My 1257TG was a little noisy when I installed it in my b44, but only when sitting at center. I did some work removing the little bit of bind I had in the steering and now it's quiet as a sleeping babe. Super power and ultra fast. No complaints at all. If you have a spektrum radio, do yourself a favor and get the glitch buster for your Rx. I have futaba and have had absolutely no troubles.

It's noisy because its trying to center itself or is still getting a slight signal from your radio. Check trims... check radio wheel smoothness and spring tension... check linkage freedom... its not the servo.