Back to the 26" or 28".
With an auto loader, they are about 3"s longer than an O/U same barrel length.
Two years ago, I borrowed an O/U to hunt ducks in MO. It felt short, and swung fast for me.[felt short, 28" bbls] It could have used longer barrels for balance.
Auto loader, you loose no speed in 2"s less barrels, kind of depends on fit and balance, and range shooting.
Depends on how old your eyes are and how they focus, the longer sight plane may help.
