I got the G9 to replace the 42 LG C2 and I must say that I wasn't 100% satisfied with the switch.
Of course the G9 is more engaging but it also brings with it several problems certainly due to how Samsung manages this monitor.
I have never had the slightest problem with the C2, no black screens, no overheating, no other problems that I have had with the G9 since I got it.
In terms of rendering, perhaps the G9 is ahead of the C2 precisely due to the lack of the white pixel (no metamerism for those who know what it is) and for a more substantial color rendering.
The C2 on the other hand is more precise in HGIG and certainly brighter on average than the Samsung in HDR, where the latter wins only in the maximum peak but then giving up performance due to a more invasive ABL (and after modifying the service menu if you use the high peak otherwise the result obtained is also wrong)
With games that run natively in 32:9 I would say G9 for life, for the rest of the uses and for security from the point of view of retention I would say C2 (wildly mistreated for 2 years as a desktop screen without the slightest precaution other than the logo brightness and NEVER seen any sign of retention)
The Samsung gives me the idea of having slightly worse color shades than the C2 (but I also read about those who complain about the C2 so I'm only speaking for my case)