It's our fault not protecting the 8K demo safe and sound during the event. We have both 8K and 5K at the event. The 8k is not that stable after the wire of the prototype been dragged several times harshly in the event, so we use 5K, a lighter version that will also be available.
We will make sure to invite professional reviewers to make hands-on review next week.
I have updated the most recent improvement on 8K here: http://forum.pimaxvr.com/t/8k-new-prototype-updates/2763/2
We are not big enough to invest heavily in marketing. Most of our limited resources have been pull into R&D and manufacturing. That's why your support is such a valuable asset for us at this stage.
We are motivated to drive VR further because we have a group of VR enthusiasts always raise insightful questions and ideas. We cannot make this far with out you, 8K is a work based on your feedback.
Thanks again for being part of shaping 8K experience!