So I purchased two projectors.
And the Vankyo Performance V630
https://www.amazon.co.uk/gp/product/B07YYY5Y72/ref=ppx_yo_dt_b_asin_title_o01_s01?ie=UTF8&psc=1
This video shows me unboxing, and my initial thoughts, and then using them.
It's not a professional video, it's done in my studio which is pretty messy at the moment with lots of packing boxes everywhere. But hopefully you'll get the gist.
What we need in a projector is to be able to project smaller images from shorter distances - and these ones just don't do that.
Hope it's useful - the quest continues…