I have one of the Nikon Coyote 4.5-14X40 I really like it. I am a big Nikon fan I have to say. Own a few Buckmasters and Monarch scopes, I also have a Zeiss Conquest, and an older Leupold. I am very happy with the Nikon Coyote. I think it performs excellent in low light conditions. I am not sure what glass they used in it but it seems just as bright and clear as the Monarch scopes that I have. I also really like the reticle. It allows for quick acquisition of targets and leaves you free of clutter to focus on your point of impact. I was a little curious as to whether or not it would be hard to get the scope to group well on a target. That has not been the case at all. In fact I like the circle reticle very much. My wife also really likes the reticle and says it is easier for her to focus on the target she is trying to hit.
The one thing that I don't like about the scope is this: I am shooting a .223, and I can shoot the main circle out to about 180 yards (and that is sighted in dead on at 100yds), then the second circle is accurate from about 250yds to 320yds, and I have not shot much with the 3rd circle but it seems to be pretty accurate at 400yds. The part I don't like is having to use the line that runs between the top circle and middle circle to shoot that 180-250 yard area. It makes for too much clutter. (when I say accurate I am saying that using the circle reticle centered on the target it will put the bullet on that target, normally a 6-8 inch circle)