I have to go with the buckhammers since they are the most accurate at 100 yards out of my 20 gauge Tracker ll barrel.
In my opinion the difference in trajectory vs. slow and accurate, or fast and accurate, are really a moot point if you think about it, if you are sighted in for shotgun range of 50 to 100 yards.
Beyond that, you are pushing the limits of the effectiveness of your shotgun, and it then becomes an ethical consideration.