Can't KNOCK a 50 for low light, if one accepts the higher mounting and bulk/weight that goes along with it.
In a 4-14 a 50mm beats the 40s at 10x and higher at Dusk, based on my samples. As mentioned above, at 10x and higher, my fov blacked out at the end of a Tx hunt w/a 4-14x40. Texas unlike LA here, is much more open and light seems to be more available vs deep woods around here. Used a 6x42 w/HD to good effect long ago - a good combo for woods hunting.
Yet for me, most of my hunting has gone well w/simple 4 and 6x scopes so 10-12x is all I'd want for a game rifle.
Baskin Robbins sold many flavors...ALL made customers happy.
