Trigger response: High torque motor + High speed gears + Mosfet. I'm currently using a Tienly 30000 motor, with the siegtek 14:1 gears on a 7.4v lipo. Even with the lower voltage, trigger response is fantastic. Could probably be better if I used a 11.1 or a Tienly 35000, but I'm happy where it is currently.
Edit: Aaaannndd I just noticed this was a month old...