I have tried the LG and didn't like how movement looked on it... and it also felt less responsive than the AW2518hf I've tried.
When it comes to 27" 240hz screens, the Acer xf270ha was much more to my liking than the LG... but that monitor skips frames
I could get the LG right now for 250 euros new from an online shop here... (Tha caveat being that it has been opened up and sent back by somebody else, meaning I can't do the same... This time, I have to keep it if I order it.)
List of 240hz monitors I've tried in the order I got them:
aw2518hf
xf270ha
27gk750f-b
aw2518h
My favourite was the aw2518hf, It felt the most responsive, with the best OD implementation to my eyes. (Yes, it was even better than it's more expensive g-sync brother in both categories.)
Runner up is the acer, which I would have kept, if it wouldn't have been for the frameskipping issue.
As I've said, I didn't like how the screen looked when the picture was in motion on the LG.
Yes, it felt responsive and fast...but onscreen motion seemed smeary/grainy to me.... and I know it wasn't because of the lower pixel density, since I didn't have this problem with the acer 27" monitor.
As for the aw2518h it loses out to it's cheaper sibling, it felt less responsive, and the last two OD settings (fast and super fast) were overdone, and as such, unusable...the fist one (normal) was fine in most cases, but in some, it would have needed juuust a little bit more umph, to get motion to seem more clear.
(idk why manufacturers don't enable more granual control over the overdrive on the their monitors... 3 steps are usually not enough, because they fail to dial them in correctly...)
Also, the screen was just brighter overall by default when compered to the freesync version (aw2518hf) which was unnecessary... the screen didn't need the brighter gamma setting, which it received.
Next up I'm gonna try the much more expensive xl2740, as I'm desperate to find a 27" 240h monitor which is as good as the aw2518hf. (at least in terms pf responsiveness and motion clarity... I can live with slightly worse colors and brighter gamma)