I have a couple of these with the Gen 2 XR reticles...
I also have Kahles 6-24X56 with mill reticle and knobs.
There is a couple of old Leupold VXIII's that I used to use in the mix as well but they are not mounted on rifles at this time and probably wont be either.
The rest of my rifles have the iron sights which have become difficult for me to use due to my aging eyes. However, the with the M1A peep sight I went to a smaller aperature and it works for me out to 100 yards or so as far as clear target picture goes.