Zhelton,
I previously owned the older model 4.6x scope that did not have the center piece to punch out of the lens cap. The view was grainy and fuzzy. I never could get it focused properly. Later the company fixed the problem by adding the punch-out piece which better controls the amount of light entering the scope. I feel certain the newer 4.6x scopes are better now.
Last spring I purchased the 6.5x model and I like it. The focus is better and to my aging eyes, I can see better. I am one of those guys who tend to like a little more magnification. True, you lose some field of view.
One thing to remember with either scope is that too much IR light will white out your target. The Photons are very light-sensitive. If the main beam is not directly centered on the target then you should be able to see very well. If the illumination is centered and it's too bright, you may have to get an adjustable mount that will allow you to adjust the main beam off to the side or lower or something.