If you intend to mount it at a fairly steep angle (parallel to the plane of the ground like in a cabaret style), you may find that the viewing angles from "below" are pretty terrible on most monitors. It's often much better from "above", so you can turn the monitor around and use the appropriate driver option to fix the image. Some commercial arcade games do this.
Note that IPS panels won't do this nearly as badly, but they cost a lot more.