I think the benelli inerta system and the beretta gas are the best. I use a beretta xtrema 2 now and have not had 1 jam in 2 seasons. NOT 1 ???? that is excellent. I had a mossberg 935 prior to that, and it was the biggest piece of garbage I ever used. I sent it back 2 times. The 2nd time I got it back, I sold it without even trying to use it.
I would highly advise not to use mossberg 935's for waterfowl.
Turkey yes. when you usually dont need reliability for multiple shots.