I saw an LG C9 kept next to a C8 first time..
And something surprising I found, I saw that the C8 actually looked a tad bit brighter and sharper than the C9. These were seen at a store so of course both were uncalibrated running on preset modes, but I had the store guy confirm to me by remote that both tv's were set to the cinema home default preset and running the same hdr demo content through a splitter. I went there expecting the C9 to have an edge over the C8 in these areas.
So was it my eyes tricking me or these two tv's on display were set up wrongly, or do the C8's infact appear a little brighter in an uncalibrated state? I'm not talking of meter measurements, just what I saw by eye.