digital servos have much better and stronger centering. They center so fast and recheck their position soo many times a second they make buzzing sound instead of a kind of grinding sound that analog servos make then they are centering. basically digital servos are much more prescise and powerfull the main drawback is the huge amount of power they take.

I run a digital servo for steering and use just a regular servo for throttle/brake. Using a digital servo in throttle brake sucks a ton of power because of the amount of power the brake side uses so I find it better to use an analog servo instead. you don't need any special RX's or TX's or anyhitng to run a digital servo. Digital and analog only refers to the way the srervo interperts the information it recieves from the signal wire commign from the RX.


oh yeah Hitec's most powerfull standard size servo is this one.

http://www.servocity.com/html/hsr-59...ra_torque.html

I believe its the most powerfull standard sized servo on the market right now with 333oz of toruqe!