Wayland on most machines, X11 on my desktop with Nvidia GPU. On all my non-Nvidia machines, Wayland works great. The screens tear less, and the gestures are more responsive.

I try out Plasma Wayland with Nvidia GPU from time to time, but last time I tried (a few months ago), there were still some showstoppers. For example:

1. KRunner hangs and can’t be opened again.
2. Panel freezes visually.
3. Pipewire screen sharing results in a black canvas.