Yotehunter,
My aging eyes like the 6.5x scope better at my 60 yard coyote bait site than I did the 4.6x. The gray fox was not taken at the bait site, but was out in the field at maybe 35 yards.
Field of view is less with the 6.5x as you would imagine. I guess if you are calling coyotes in close then the 4.6x might serve you better, but if 75 to 100 yard shots might be the norm, then I would go with the 6.5x.
Here are some tests I did with the earlier model 4.6x Photon. I didn't like the focus / clarity of the scope, but the new ones are better with the hole in the center of the lens cover, which regulates the amount of light entering. This video will give you an idea of field of view of the 4.6x at least.