RE: extreme sniper or copper johns?
I went through the same decision earlier this summer and went with the Xtreme. I found the light placement a little better (go with the purple haze) and, most importantly, the size of the housing. When I look through my peep I could not see the ring around the pins with the CJ. When I look through my peep at the Xtreme I can see all of the orange ring and I know that everything is centered and lined up. The set up just worked better for me.