I recently started using the ShiftRC RRS servo on a few of my TC's and am quite happy with it. I prefer the metal case so you don't need to worry about the mounting ears warping or breaking. It also is Sanwa SR mode compatible. This servo is $85 but is more comparable to some of the $100+ options.



The Futaba S9551 is also a good choice.. that servo has been around, unchanged for a long time for a reason. They have gotten expensive though. At that price point, i would get the RRS.