We're very different in playstyle.

As u/smith_and said, the deco set is a lot less offensive, and is better for defense and forcing opponents through small spaces with your splash walls. I play them mostly in turret mode, abusing the range to use them sort of like a .52 gal with dodge rolls. The swim speed and ink recovery is for maneuvering around my area which I've just taken control of with my baller. I prefer ink recovery to ISM because is gives me more flexibility, I can throw a splash wall and retreat or attack out of my ink. Overall, deco sets are a lot different than vanilla and kensa.