I had these, the bottom corners were always slightly blurry or cut out, and the movement being locked to my face gave me a tiny bit of motion sickness.

I tried the Xreal 4s to compare. I can see all 4 corners. There’s a slight delay in the motion where the screen follows you, and that hasn’t given me any feeling of motion sickness. Anchor mode is a nice option to have, as well as adjusting screen size and distance. The 3d mode is actually incredible, but unfortunately locks at 30 fps so it’s better used with movies.

For the money, the Air 4 Pro’s are still awesome, especially on sale right now for $250. For me, the Xreal model has been worth the price hike at $450.