I don't really see the use for two 1080p monitors for gaming. The Acer XB241H
is a very nice 144Hz G-Sync monitor, so I could see buying one. Two doesn't make a lot of sense.
The LG 27UD68-P
is awesome, and will be better for editing videos due to the higher resolution and IPS display, but it's limited to 60Hz.
The way I see it, what you should really be deciding between is one small gaming monitor or one large 4K monitor. Depends on your priorities.