Does anyone have recommendations for the best 4k projector bellow $1500 usd price point? I am open to refurbished options.

I am considering a Nebula Cosmos 4k but would prefer to ceiling mount my projector, and it isn't really built for that.

I am installing in an open floorplan livingroom projecting on a drop-down screen in the middle of the room approximately 10 ft from the wall, with couches up against the wall.

Any first hand opinions would be greatly appreciated.