I have this one and it's great, also paired with a Mac. I like the aesthetics of it. 4K @ 120 Hz and 65W usb-c charging is not bad even at its typical price point. The U series is probably better for commercial photo work though; IIRC one reason this one is priced in a different bracket is because it's not calibrated and verified for optimal color accuracy. Not something I think of in daily use and light gaming though.

Might have to get Call of Duty: Modern Warfare II as an additional benchmark!

Absolutely nothing.

Maybe people can share stories about their time with it?

I have one of these monitors, i picked one up last year for cheap they work pretty well for everyday use and they are pretty clear and color isnt bad