you literally only need monitors for a double blind test, that’s it.

this is assmiung displays don’t have any issues such as overshoot, which the majority of 240hz and 360hz panels on the market do - a lot of the 240hz panels (ahem, Samsung) are worse than even budget 144hz panels.

https://blurbusters.com/blur-busters-law-amazing-journey-to-future-1000hz-displays-with-blurfree-sample-and-hold/

human eye will scale to around 1000hz, albeit with exponentially decreasing difference past 240.

Most trained eyes should still be able to blind tell between 360 and 540 quite easily, many people I know have passed double blind test for 240 VS 360.