In the compact acog's they have a 3x24 scope. In the non compact version they have 3.5x35 and 4x32. I know what difference the magnification makes but the second number which I believe is the outer lense size, how much difference is there in between the x24, x32 and the x35? The larger the lense the more light allowed in? If so are the differences in these huge? Even noticable? Thanks