Vortex fan - Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane (SFP)

I have a 3x9 40 crossfire, 3x9 50 crossfire 2, and now this 3.5 x10 50 diamondback. They are all clear and bright. The 50mm seems to be better to me than the 40. Not sure why, just seems to bring the image up closer and very clean. I've had great ability to see at dusk with these. For the money, very hard to beat. I set at 100 yards and never move it, So can't really comment on ladder tests but they have stayed put over years. When I retire shortly, I hope to find a longer range and play with my zero and longer range shooting. I'll see how accurate the clicks are. For zeroing, they were very close to the 1/4inch. For hunting to 300 yards,this is all you need. These have very good eye relief so scope bite should be limited. Rifles used, savage 30-06. Knight muzzeloader, Christian arms evoke 7prc.