I have a Remington 1100 LT 20 that I really enjoy. I have a Magnum barrel, a Skeet barrel, and a 28" Barrel 2-3/4" that I had Mike Orlen install choke tubes in, and the 28" gets 99% of the usage. In fact, except for waterfowl hunting that gun gets most of my shooting these days. An 1100 is not as light as some, but it still isn't close to what you would call heavy,and it won't go as long between cleanings with dirty loads as some newer designs but I've never shot it to where it quit - over 500 rounds a couple of times - and that gas action makes for a very soft shooter. I do give it a quick 5 minute spray and wipe of the gas parts anytime I shoot it whether its 1 round or several hundred, and it has been dead reliable. If you don't have that 5 minutes to spend cleaning, I would advise you to look at something else, because sooner or later you will have trouble.
11-87 is practically the same gun as an 1100, but it has the 3" capability. Note, there is an error in the 11-87 owner's manual. You should remove the barrel seal activator for heavy loads.