yea I tried the Viture and the headtracking was nowhere near where it needed to be. I really liked everything else about the Viture Pros. They were lighter than the Xreal ones, generated less heat, and had individual diopter adjustments on each lense.

Xreal One however has rock-solid head tracking. It does drift occasionally but it's very tolerable. I returned the Viture Pro and ketp the Xreal one.