the dot in the sight for red dot sights? I have an Aimpoint brochure, and it says,"Aimpoint sights are parallax free, which means that the visible dot remains parallel to the bore of your weapon no matter what angle your eye is in relation to the sight." It sounds like its something that they do, and not all others do.It also says," Red dot sights are superior to iron sights and magnafying sights in many ways." Proven to be fastest type of reticle to place on target...." Thoughts-comments?