It will vary in whether you are interested in more informational cues or immersive cues.
I like roll and heave. Feeling the subtle motions of the car get bumpy over the road surface and curbs, while also getting a bit of momentum sensation from turns with left right motion. The more immersive fluff.
Others may prefer sway, for cues on traction loss, or pitch for braking sensations. Each to help give some better semblance of the activity of the car to help with correction. It just varies on preference.
Think there is already a thread on GS5 with motion that is active for that question.