The real short stuff might carry easier but tough to connect when you need to IMO. They just don't move well.
YMMV
No offense to you or anyone else, but just my humble $0.02 worth. I hear this a bunch and
I personally don't find it to be true
for me... My 24" auto is the same length as a 27-28" O/U.
Not bragging, as I am far from a competition shooter and only shoot average on trap/skeet, but I am a pretty good shot when it comes to hunting birds (ducks, geese, dove, quail, etc.) - don't have a problem getting my fair share, and anyone I've hunted with the last several year can attest to that. But I personally find shooting clays vs real birds totally different. On birds, I'm getting on and flinging shot, much quicker that shooting clays so I am not worried about "swinging smoother", etc. Also, I make sure my guns fit me - I don't sight down a plane, I point and shoot - only time I pay attention the the bead(s), plane, etc., is just practicing before the hunt (usually just around the house making sure I'm mounting the gun correctly, etc.). Unlike aiming a rifle, I just mount the gun and look at the target - more like shooting a long bow without sights vs. a compound with sights. Hard to explain because hunting with a shotgun is more instinctual shooting to me. Maybe I'd be a better shot with a longer barrel, but I'll likely never know as I prefer and shoot fine with shorter barrels.
Sorry for the rambling post, but just thought I't throw out my $0.02 worth in regards to how I shoot a shotgun... hope it makes some amount of sense.