Pumpgun for me too. I`ve used one for over 40 years. My pump is my main(which I have two of) shooter while I have an 1100 in 20ga(modified) for upland. I also own a double and 2 singles for squirrels and rabbits. As mentioned above, the pump has fewer moving parts, easier to fieldstrip, and is cheaper. I used my 870 on anything from squirrels to Greater Canadas, I just use different loads in my shells for the appropiate game.
Adam, let us know how that auto works next fall.

Ron