Folks

What are the current thoughts on Sierra orientation, I had my L and R front vertical, and the Center Sierra horizontal, what are the collective words of wisdom on the orientation of the L & R ? I have 170 rear's which are high mounted on the wall. Additionally I have some Q plugs to install but have not cracked open the box yet. If anyone has a good way to evaluate them I am interested. Apart from the obvious try em and see which one you like. HK 645 rec and a Klipsch 10" sub. I have some of Jason's matching bamboo stands 30" to use for the fronts. The center will be wall mounted horizontal. Either just below my LCD or at the same height as the FR and FL.