SetsulThe PG258Q uses the better version of that panel. On the AOC AGON AG251FZ and BenQ XL2540 it's far worse. No idea about the Acer.
I'd wait until AUO releases 27" 240Hz panels. They are planning to and these 24.5" panels are just bullshit.
G2G higher than the refresh time unless you use ridiculous amounts of overdrive just doesn't make any sense.
I mean do you really think the came up with 24.5" specifically for 240Hz monitors? These are cut up 6 bit + FRC garbage tier 49" 4K TN panels that just happen to be about as fast as 144 Hz panels. They have no business being sold as 240 Hz.
Can you link me an article saying they would do that, I vaguely remember them talking about but I can't find it again. ]
Also consider the "Acer Predator XB251HQT" hasn't been sold yet I'd guess they have the same revision of Panel as ASUS PG258Q.
-edit-
Seems like the panels already exist M270HTN02.0 and M270HTN02.3 not sure what models will include these or when though.