I prefer the CQB on the Quick Shot and the 8 MOA on the FF. With the CQB, I think you can more easily and steadily encircle where you want the center of your pattern, and nothing is covered. The large dot, wih aging eyes, provides for all but instant targeting. For shotgunning, I think these are best. For more precision and longer range, like for a 17 or 22, the smaller dot.
Ducks