I have both 6x and 10x SS scopes. They are both fantastic, but for my old eyes, the 10x is better. I have used both at last light, near and far. They are equally good in that respect, but the 10x is a bit better, when developing loads. I have several other scopes that are good, but the fixed-power scopes take all of the guess work and decision as to what power you need, out of the equation.