By the way, if you're interested in the Pimax 8K, it's
currently on Kickstarter.
I'm considering it... especially since I already own the Vive, and the Pimax works with the Vive tracking hardware. The biggest thing is that I've heard some negative remarks over the excessively large FoV. Apparently, right now they use a sort of stretching to get it to work, but I've also read remarks from developers that FoV gets a bit hairy at such large values. It makes me think that the screen could seriously use some eye tracking rather than try to fill the entire thing at all times.