Question about LG OLED55GX6

The G stands for Gallery ... the G is flat throughout and can thus be mounted closer to the wall. It should also come with a wall mount and not a stand.
Finally, the GX has the better audio system. 4.2 instead of 2.2 and 60W instead of 40W output power.
In summary: The GX should be on the wall and the sound is slightly better but still too bad ;) Cheers!