I just spent an hour at Best Buy with the 2018 q9 65". I watched their demo reel and then viewed content on a thumb drive I brought that had things like 5% 50% grey.. recorded Witcher3 4k gameplay, photos, etc..
The BB q9 set was unfortunately out on the main floor not in dark magnolia room..
Here are my impressions.
The q9f hands down has the best overall picture I have seen far exceeding anything to date including Oleds.. There was nothing else even close on the floor including sony, Oled, 2017Q9. And in comparison the, middle grade TV's looked like washed out 1990's first gen hot garbage.. It was a stunning difference.
Especially In terms of micro and macro contrast, colour volume/saturation, Panel clarity (that 3d thre is no screen look)..
The q9f has a massive deep "wet" saturated high gamut color volume that was stunning. But it was the new anti glare screen that took that gamut to the next level and unlocked it's potential by giving the picture a true "through the screen" depth that only OLED had before. I can not overemphasis how important Samsung's New anti glare screen is for bringing the picture to living 3d through the window life. Nothing else comes close.
I looked for blooming and saw none. Pure White next to pure black produced no noticeable bloom which really IMO makes the q9f the first to have a true OLED look to the picture. Blacks where OLED like jet blacks as best I could tell (being out on the main floor).
I watched a withcher3 gameplay video recorded at night scene to look at shadow detail and look for DSE on dark scenes.. I am happy to report I could see NO DSE on dark panning scenery.. I am very sensitive to DSE so if it was there I believe I would have seen it.
Running on pure white or near pure white, there is however some "White" Dse on the q9F. I didn't see any of the white clouding in actual bright scenes, clouds, ets. however I plan to make some videos to further investigate this this as I think it could be the ONE weakness of the q9f. I will have to go back and explore if this is an issue. They did have some snow and cloud scenes in the demo reel and I didn't see this white dse show up on it.. so it may only be noticible on a pure white screen.. This white DSE is comming from the zones.. again, I did NOT see any dark scene DSE or 5% grey DSE which is probably more important.
One BIG surprise upon seeing the q9F in person that NO picture can capture.. To my eyes, the q9f had incredibly good Pixel response- meaning no motion trailing, blurring, smearing etc.. I am not talking about the motion handling/processing- I am talking specifically about the pixel response.. The q9f very much had an OLED look to ito the "lack" of pixel blur motion (it was that good). I know this has not been quantified yet but I could clearly see a huge difference between the q9f an other LED TVs.. This was big pleasant surprise for me as I can see this will make for an amazing Gamming and sports TV. The "temporal resolution" you can get with crisp pixel response is a Huge added bonus to this years model. It was better then any LCD I have seen to date (subjectively).
The q9f is now in BB retail stores display models. The picture is something you have to see in person. No words or pictures will do it justice you really have to see it to believe it. It was much better then I expected even regarding the high praise some have given it..
Samsung 2018 65" Q7FN 4k HDR Edgelit TV
Denon 2015 X1200W AVR
HTPC with I7, and 1080TI SLI
Klipsch RF 82 tower reference speakers. in full 5.1 config.