Amazon has the Optoma HD27HDR for $521. Normal price is $649 and the sale price for the last two weeks at Amazon and Best Buy was $579. This projector has HDR and will accept a 4K input that is projected at 1080P. It also has a 120Hz refresh rate and only 8ms input lag so it is great for sports and also gaming. It uses the TI .65 chip so there is no gray box around your picture. It's contrast ratio is 50,000 to 1 and it has 3,400 lumen so it is great for TV and movies even in a somewhat lighted room. The lowest price ever was $518 and I have been waiting for it to come down to $499 but I don't think I am going to be greedy and going to have Best Buy price match this today.
It is $518 today 11/19/19, the lowest price since this projector was released.