Remington 870 and Mossbergs are both workhorses..great guns, I've owned both.

I personally prefer the feel of the Benelli line of guns more, but to each his own. Go shoulder each of em, and get the one you like best. Each gun likes different chokes, but I do know Benelli guns usually get along well with an Indian Creek tube and hevi shot.

I shoot winchester hi density through a carlsons ported tube with no complaints...kills at 50 just as easily as 30.