I have had about 9 1100s and 11-87s so you might say I like them more than a little. Heaven knows how many I sold. I thinned the gun collection a couple of years ago and cleared about $20,000, so cost was not a factor in buying some replacement guns. I got a cherry 1966 1100 Magnum to allow me to "retire" my 1963 2-3/4" 1100 (bought new) with a 3" Steel Shot barrel to clays only duty, and the new gun is the designated waterfowl gun. I already had a 20 gauge Magnum 1100, so I got a 1970 28 gauge 1100 to replace two other 28s and I consider myself all set.
If you put a 2-3/4" barrel on the 3" gun it will work fine with just about any 2-3/4" load you can find, but if I was going to shoot a lot of heavy 2-3/4" loads I would watch the buffer or get a standard action sleeve to go with the 2-3/4" barrel. The 1100 design was balanced in that the Magnum guns have a heavier action sleeve to go with the single gas port barrel. The longer pressure pulse got the heavier sleeve moving just right. You can pick up a lot of very useful information on a long flight with Wayne Leek.
The actions springs have all been the same since day one. The early 11-87s had the early RemChoke barrels and were heavier and handled different than an 1100, and a lot of 1100 lovers did not like that difference. I don't think the 11-87 ever fully recovered from that misstep, even though the newer ones feel as good as an 1100 to me. And now Remington has started marketing the 11-87s as more utilitarian (and cheaper) hunter's guns, and the new 1100s are all dolled up for the target ranges.
A lot of people dog the 1100 because Remington hasn't changed the design, but there is really nothing wrong with it. A Model 12 is a classic, as is a Browning Auto 5, but Remington just has no innovation. A little bias perhaps?
BTW, I have owned Berettas, a Benelli, some Brownings, and some Winchesters, and while there was basically nothing wrong with any of them either, I just prefer the Remingtons and the others are now all gone.