I have an 11-87 that I absolutely love for Ducks. I also have an 870, but i grab the 11-87 more often. I grew up shooting an 870, so the 11-87 just feels right. Then I have a super Vinci that just kills anything it shoot at as well.Why the American made Remington of course. The only question would be which flavor do you want 870 or 1100. Probably the 870 WingMaster is King.
I am not sure I could pick just 1 out of the 3.