I've been using this Orion I got, and it is bright enough on the middle brightness I can easily identify out to about 200 yards which pretty much covers my fields of fire, I can even make out just the head when that's all that's showing. For myself I see no need to turn on a regular light, the target and cross hairs are as clear as can be. Are guys using the lowest brightness possible to keep from scaring them off? So far the ones I'm seeing are not seeming like they care about the light.
One of the things I'm wondering is if the clarity is a lot better on the Zeiss Diavari I'm using, and if poor light gathering scopes wouldn't be dramatically reducing what can be easily seen because of the light spectrum being on the harder side of light pickup? My hunting buddy has a cheapy Bushnell on his .22-250 and that thing is completely worthless at night. He could not pickup any vision of a Bobcat I was spotlighting in a tree at about 125 yards that I could see as clear as day through an Elite 4200 6-24x. I told him to take my rifle, it was on about 10x, look for the light and he would see the cat on the big open branch that was exposed. Right away he said "OMG, I'm getting one of these, how much are they?" I told him he didn't want a 6-24x, he could get a 3-9x or 4-12x a lot cheaper.