The A300 is an auto & the 828U is an over/under. Like comparing apples to oranges in my opinion, plus a big price difference. A have a Beretta A300 Outlander Sporting model. I like the gun & is a heck of a bargain for a Beretta shotgun imo. $850 new from Gipson's 2 years ago. Never shot a 828U but would probably go with a Browning if I had to chose, I just like Browning for the money. Others will have opinions for you also. I am the authority on nothing, just an opinion.