Well, I only read three pages of this thread but here are my two cents.
Benelli autoloaders are very well made and function very well in all weather, they will last you a very very very long time, that said they are lightweight, kick like mules, and are for the most part ugly. Worst of all they are overpriced by a large margin, still didn't stop me from buying a couple of super sports.
Beretta gas loaders are equally as well made, the too function in all kinds of weather, I shot mine in a tournament at the end of march in -20 degree weather with 50-60 km an hour winds with sideways snow/freezing rain, I was so cold my face would actually freeze to the stock in the short time it was there.
Best part about the beretta is the recoil is much less, the guns are heavier and they look good. They also cycle light loads a lot more reliably.
Finally it needs to be said, the Remington 1100, the work horse, I have NEVER been let down by my favourite 1100, the only thing I've ever replaced was the o-ring, big deal. It works in all kinds of weather.
About five or six years ago I was standing atop of hurricane hill (IE Oshawa skeet club) it was a full shoot and they had to put on an extra flight for the 12 ga. event early in the morning. Start time was 8:00 am, Pouring rain like you've never seen, I went out there with my squad mates, getting completly soaked, I was wearing a Bob Allen shooting pouch with the vinyl coating on the inside, I had to dump the water out on stations 4 and 7, the shells were actually floating in the water!!! Never had a hiccup. In the 4th round the rain stopped and the thickest fog ever rolled in, our referee, as some of you may remember him, was Norbert Maeves (RIP), I asked him "what do we do if the fog gets any thicker?" He turned to me and said "sound's like a good shot!" and gave me smile.
Trusty old 1100 never let me down and she was soaked to her very core.
She's also very pretty, ask nice and maybe I'll show a picture
That said only buy the older ones IE 80's and earlier.
I know I deviated a little from the topic, but there seems to be a lot of clay snobs who enjoy bashing the old remmington autoloaders and someone should stand up for a truly great gun.