The line in the toshiba 55C350 graph doesn't seem flat to me.
Also, it is not good as a PC monitor. "can't display proper chroma 4:4:4. This is disappointing if you want to use it as a PC monitor and want clear text" https://www.rtings.com/tv/reviews/toshiba/c350-fire-tv-2021
Is there a better option?
I'm really desperate to find a 50"-55" TV that its line is completely flat line, totally flicker free, in all the settings and brightness levels.
Also, is there another site that makes measurements, like rtings and even more thoroughly than them?