Getting away from esc's for today i have some info about servo's so the ones who are interested can learn something about all in r/c not just esc's and software .

Just a little background on servos as i know you have found the problem somewhere with your radio and servo's.

digital = faster as they use a microproccessor compared to the analogue that uses a mosfet amplifier ,

Digital uses more current because of coreless motors as well as brushless motors because the current is ready to fire before even a signal is applied .

They also are very problematic if the gears that are used have alot of slack between the teeth which will cause the servo to hunt for its centre position when a narrow deadband is programmed from factory so slack gear means on the servos return to centre it travesl at such a high speed that it will skip the deadzone thus causing hunting if the gears have slack .But in saying that a wider deadzone will solve the hunting but will cause the servo to have less performance as in speed etc but nothing the human feel or the eye can pick up anyway .

Some Manufacturers digital servos also don't work well with all radios as they design most of them with a different frequency which will cause glitching in different brands of radio as they design them for there own product and no one else's not all digital servo will work with all radios and what i mean is with performance and interference etc and that has alot to do with the bandwidth of the radio signal and the bandwitdh of the servo .Larger bandwith less performance and prone to other interference small bandwith more performance but less chance of interference .

were the Analogues when manufactured and designed properly with no flee market components are slower but dont have the massive current drain dont have the problems with deadzone issues with hunting ,slower but nothing really that the human eye can actually see but will work with all radios may it be 2.4ghz or 29mhz and are more reliable .