I just sold a Glock 20. It was fun and accurate and I killed one deer with it. My personal limit was about 45 yards. I like an optic in low light conditions. I never tried it on game but had good accuracy with 200 grain xtp. One good thing about 45 super is you can shoot standard 45 acp ammo through it plinking though you may have to change the recoil spring. With the Glock in 10mm you can buy a .40 barrel for it and shoot 40 or 10mm with just swapping the barrel. I said if I had it to do again I'd go 45 just for ammo availability but then after that I bought a bisley hunter in 41 mag.