Okay, so I cheaped out and bought this low cost TV mount. It holds the weight of the TV well, but it only "hangs" on the top rail, so if someone or some child got a little rambunctious with it, it feels like the TV could fall off. I am returning this one, and I have purchased a more expensive one ($80) that is sturdier and with the new mount, the TV has four points of attachment (two on top and two on the bottom).
I am returning this mount (hopefully) because it only hangs on the top rail with two points of attachment with gravity keeping the TV in place. I'll feel better with the grandkids around having a more secure mount.
It is a good price and would probably work for less concerned individuals.