Unboxing the VAVA 4K UST Projector – All in one theatre for inside your home

What was the issue with the old one? I am thinking about buying one (VAVA 4K Colour Black). But not sure which one to pick VAVA or Optoma Cinemax p 2 ?

How much price??sir

The most reviewed UST projector. How you get a set? No longer available at Amazon

Full demo is highly appreciated. No need to do unboxing.