You don't have to choose which one is being used. There is a setting in the Advanced menu where you can turn off torque sensing and have cadence-only. Can't do the reverse. They work very nicely together. When you very first start pedaling, there is a brief lag before the motor kicks in -- less than one rotation of the pedals, so yeah, pretty brief. You can always get more power by pressing harder on the pedals -- torque sensing -- or you can move at a steady clip without much effort -- cadence sensing. In addition (as if that weren't enough), there is a feature called TAB, Throttle Assist Boost. If you are pedaling and press on the throttle at the same time, you get an extra boost of power above what the torque sensor would give you. This is very handy for quick get-aways. You will learn how to feather the throttle to get the amount of boost you want, from very light all the way to the whole 1000 watts the motor is capable of. And of course, you can use the throttle without pedaling at all. Lots of choices, lots of fun experiments to try during your first 100 miles or so until you are doing it unconsciously.
