Should I use DC motors With or Without Encoder

I am rather new to the arduino World
I have somewhat learned from the forum that one requires a DC motor with encoder in applications with precision and more control (I think)
What I need to ask is for my project I have to control 6 DC motors using a Radio controller, My application requires a high torque output with no restriction on speed. SO do I use motors with an encoder or without one ?
Thanks in advance :slight_smile:

SO do I use motors with an encoder or without one ?

With, if you care where the motor is. Without, if you don't.