I've had the HZ39HDR for 3 days now. The projector is super bright. Presentation mode is perfectly usable at 110" under plenty of ambient light with all the windows opened (which is what I wanted) although the colors aren't the greatest. I think because it is a RGBY wheel, pumping up the BrilliantColor really gives the picture a yellow tint. Whereas on the HD27HDR which has a RGBYWC wheel, the BrilliantColor only boosts the white.
In sRGB mode where BrilliantColor is off by default the colors looks absolutely great out of the box. Even at 50% power (you can step down from 100% to 50% in steps of 5%), I am getting significantly raised blacks on a 140" screen in a dark room so I'll have to get a ND filter. I was hoping the laser would allow the flexibility to darken the image enough to go from super bright presentation mode in the daylight to home theatre at night. Would ideally need a much bigger screen for this in a dark room. 110" to 140" is going from the minimum to maximum zoom at my throw distance. Hopefully I can find a good ND filter I can pop that on when I want to watch a film in ideal dark conditions.
I tried forcing the projector to accept a 1080p 120Hz signal and wasn't having any luck. 120 Hz was working in low resolution modes though. Will have to wait for the gaming firmware update to get 120Hz and Enhanced Gaming Mode. Once that is out I will consider this a great upgrade over the HD27HDR. Uniformity seems a lot better and on my HD27HDR I was having image stability issues.
HDR has the same limitations and washed out colors out of the box that the HD27HDR has so I think I'm just going to ignore it and run the projector in SDR.