Anyone recommend a 27inch G-Sync gaming monitor for my son?

Hello,

I want to upgrade my sons AOC monitor to a new 27inch monitor, I'd like to stick with AOC as the price is good, but there are so many to choose from. Can anyone recommend one that is G-Sync compatible, good Hz and vesa/wall mountable?

Are these any good?

AOC Gaming Q27G4X

AOC Gaming 27G2ZNE