I guess I will chime in. I love mine. No malfunctions of any kind as of yet, tough finish, looks good, patterns well with all the ammo I have tried, is very soft recoiling for a 12 gauge and is easy to break down and clean. What more could you ask.
We also have a Benelli Nova Special Purpose that is very nice and works like a charm but I don't like it as much as my MM. The 870 just feels right and shoulders just right. The Benelli seems a little long for me. I do however like the Ghost Rings on the Benelli, although I really don't feel they would offer me much of an advantage unless I was shooting slugs at 25-50 yards which as HD goes probably ain't gonna happen.
I say go for it. I did a lot of research and the 870 seems to be the most robust of the bunch but to be honest all the pumps were good.
Mossberg...don't like the forearm but they hold like 9 rounds and come in a marinecoat silver finish.
Win Defender 1300 or FN nice and fast action but just didn't do it for me. I dunno, not cool enough looking I guess.
Benelli, my second choice. Great shotgun.
I think those are the big choices. For me the Marine Magnum or 870 Police fit me perfectly.
Chris