Originally Posted by dcx4610
The Q60R is edge lit like the KS8000 and felt noticeably brighter to me. Looking at rtings, it looks like the KS8000 had a slightly higher SDR brightness but the brightness for HDR content is quite a bit higher on the Q60/Q70.
The KS8000 had a glossy finish which I didn't like. The brightness made it where it wasn't a big deal. Meanwhile, the Q60 and Q70 are semi-glossy so they have less work to do to mitigate the glossy screen/reflection.
That said, I did end up returning my Q60 for a Q70 because it turned out to have global dimming and no local dimming. That was a deal breaker for me. The Q70 feels a little less brighter than the Q70 (since one is edge lit and one is backlit) but the HDR is worlds better on the Q70 and the brightness of the HDR is impressive.
Honestly, if you are happy with the KS8000, just keep it. For me, I couldn't get over the chrome bezel and just wanted better HDR.
I will definitely keep My KS8000 but I just need an extra 80+ inches TV. (60 inches is not big enough for me to benefit 4k details.) The HDR brightness of Q70 looks pretty good compared to KS8000. However most of the content are SDR so SDR brightness is important as well. Everything looks superior than KS8000. But tested brightness and reflections puts me off. According to tests, it's almost as dark as OLED TVs.
I don't like glossy screen too! However they have anti reflective coat and therefore glossy screens are better at reflections than semi glossy ones.
I hope to find a store to compare q80 and q70 or q70 and NU8000 side by side. If brightness is negligible between these two models and it would be more negligible between Q70R and KS8000.
By the way I have jusct checked the Changelog on Rtings:
Remeasured SDR brightness with a PC as the source, rather than our Blu-ray player
We want to use a PC as the source from now on, so we can automate testing
We found that our Blu-ray player was sending a brighter-than-white signal all this time, causing TVs to measure brighter from the Blu-ray player than from the PC, so we had to remeasure all 2018 TVs using a PC
Remeasured HDR brightness for a few TVs with a PC as the source (LG B8, C8 and E8, Samsung The Frame 2018, TCL S405, Sony X750F, Toshiba Fire TV 2018)
Changed peak brightness scoring curve to expand range to 4000 nit TVs
So the numbers are not accurate since they changed how they test brightness. So I will rely on the comments of end users. And people here upgraded from KS8000 to Q70R all seemed happy.