Questions about ASUS ROG PG48UQ

I have a question about the model and the other 42". I am planning to get either this one or the 42" for Pc. I'm undecided which one to get as there are pros and cons to the sizes. To be honest the bigger one would turn me on more. What would you recommend as I am not familiar with the topic of monitors. I also use it not only for gaming but also for watching films or series.

I'm coming back with the same question because Digitec weren't able to give me a precise answer, but perhaps someone here who is used to screen installations could help me. I want to buy this ASUS ROG 300 x 300 mm screen but my current mount (which I can't change for installation reasons) is 100 x 100 mm at 600 x 400, does that mean I can still install it or do I need a specific VESA adapter? And if so, which one do you recommend for this configuration?

Does anyone have any experience with the PG48UQ? I've had mine for a few days now. As soon as the part is switched on, the coils whine enormously. (whirring noise) Do any of you have the same problem?

Hello Digitec, according to the data directly from ASUS, the monitor has a contrast ratio of 1`500`000 : 1.... Yours says 135`000 : 1