Doug, I suggest you use the Search feature and see how some of us feel about ChiCom clones.
KPS, a shotgun of any sort is an excellent close range weapon in TRAINED hands.In untrained or unfamiliarized hands, it's a problem and not a solution.
One great way to train yourself and have fun doing same is the clay games. Another is "Practical" matches.
Back when the State of Md was paying me to teach folks to shoot, I noted that only the people that shot a shotgun recreationally moved past bare minimum level. And, the folks that shot the most were the best, regardless of discipline. IOW, a casual trapshooter shooting 500 rounds a month( low by trap standards) would be far and away better than an average hunters, shooting less than 100 rounds a year.
Also, GR sights are a nice to have on a pure HD gun, but not essential. Much good work has been done with a bead. My HD tools double as deer gun, so they have them. However,I doubt that if I fired ANY realistic COF at realistic HD ranges, my scores would be much better or worse using just a bead.
As for choice of HD pump among the Big Three, get what FEELS the best/ That's the McCRule...