The longer sight radius makes it a bit easier with the 5” version. That’s the biggest difference I found comparing different length barrels.
There is a velocity advantage to the 5” but it’s not massive and shouldn’t change what you are doing with it.
I was looking for a new range gun and decided on the m&p 2.0. Was wanting the 5” 9mm thinking longer barrel more accurate. I do not shoot in competition just for bragging rights. Could not find a 5” in stock and ended up getting the 4.25. Does the 3/4 longer barrel have a noticeable advantage?
no one will ever say "You know he would probably do better with an additional 3/4"!
If you can’t be with the one you love, love the one your with.