I bought this last Nov and it's great
https://www.amazon.com/gp/product/B08GHHT32V/
But it was on sale for $200 at the time
I don't know about the VANKYO MatrixPad Z10 but I've had a Vankyo projector for 2 years and it's great.
But looking how 10% of the reviews for the VANKYO MatrixPad Z10 are 1 star.. I'd say you get what you pay for