I shoot both, and like both .
I use the 20 more than the 28 for geese and ducks, but do not feel under gunned in a decoy blind when I have the 28 gauge loaded with Nice Shot.
I love the 28 for its lightweight frames ( my SXS weighs 5lbs. flat), but if i am doing a lot of duck and goose shooting I prefer the 20 O/U.
In the uplands the 28 is my goto even for wild pheasants when it is loaded with 7/8oz of nickel plated shot going about 1,300 FPS.
Hand loading is a must if one is going to make the 28 a versatile gun in my neck of the woods, but if I could buy Factory Hevi Shot for it I would.
I have shot birds that were missed by guys shooting 3" 12's - the key is they MISSED and I killed them!
Put the shot string where it is supposed to go and stuff will fall dead.
Cat


scopes are cool, but slings 'n' irons RULE!