My first gun was an 1100, as was my second, third and fourth. I had an 1100 in every ga. I used them strictly for skeet shooting as I wasn't into hunting yet. They are a great gun and with proper cleaning, they will function great. The down fall is the 2.75" shell if you move into hunting. The ability to shoot the 3" shell dramitically improves penetration, especially with steel shot for waterfowl. The 11-87 is the identical gun in my opinion. It has the same parts, rings, ect.. as the 1100 and it takes 3" shells. The major difference is the gas compensator in the 1187 that expells gas to absorb the recoil of the 3" load and it doesnt have the rubber O ring that is in the 1100. As far as reliability, I think the 1100 is more reliable, the 1187 has mixed reviews, some good, some not so much. If you are leaning toward an 1187, I would highly recommend looking at a used Winchester Super x2. It is comparatively priced, super reliable, and shoots so soft. They are also way easier to clean and break down than the remingtons. If you could shoot an 1187 and a SX2, you"ll see what I mean. Good luck