TV over the fireplace or not?

Pretty soon we'll have to make a decision on where to hang the TV.  Initially we were going to hang it over the stone fireplace, but given the complexity and viewing height, I'm not sure if that's the best idea.  Guardian is already running the wires, so it's just a matter of which wall.  We saw this in a Victoria Falls model this weekend:

And this is in the Ravenna model:

What do you think?  Should we hang the TV or keep it open for hanging pictures, seasonal decorations, etc.?