I have a Burris FF3, and a Vortex Venom on two different guns and they have done me well for several years now. I have used a Burris FF2 but it was replaced with the FF3.
I mashed my thumb on my left hand really bad back in Jan. and don't have much feeling in it. I say that to say that it is hard for me to tell when I am mashing the button's on these two sights. I just yesterday bought a Holosun 507C with the "shake awake" feature so that if the feeling does not come back in my thumb, I don't have to worry about turning the sight on
