I have a Nikon Monarch Gold
Very good rangefinder, had opportunity to use it in a vareity of situations, and it has worked accurately. I was suprised that it still read accurate through a plate glass window. Cant say what the maximum ranging capability is, only checked it out to 900yds so far.
But this unit doesn't have the excellent and clear quality that nikon usually provides. Also I can switch mode funtions from one to another on a cheap digital watch much faster and way easier, than this monarch gold does. Besides all that I am still pleased with the model.