Hey,
do you experience a stick drift with your elite controller? By that i mean that your controller continues to slowly drift to the side after you stopped pegging it, or that there is a random drift in general.
overall the default deadzone should work very well on all controllers, if you do not experience any stutter and you prefer a tighter stick feeling then you can reduce it in small steps. If you experience a drift then increase it again until the drift is gone.
every controller (and analog stick) is different therefore i cannot give you a best value for your controller.