My problem: should I stick with an 1100 in 12ga or get the 11-87 in 12ga.
Most of us will stop looking when we find something that really works well for us. For me, that would be the 1100 and that is the main reason I have not bought an 11-87. I no longer have my 3" 12Ga, 1100 but kept my 20Ga. That is what I used on Pheasants before they moved out of state. I have done some minor work on 11-87's and noted some physical problems that the 1100's don't have. If it were my call, I'd go with the 1100 magnum. I don't hunt waterfowl so my 20Ga 1100 suits me just fine. .....
Good luck and;
Be Safe !!!