I have a 2015 5.7 and my neighbor has a 2023 6.0.
I tossed a 3 blade jump prop on my 5.7 and it feels almost identical behind the boat despite 60 less HP.
The 2021+ drives a hella lot easier. Way less steering input required. Comparable to a 200. It just goes straight.
The new ones are quieter and smoother inside the boat.
Things I don’t like on the new ones: the vinyl on the helms seems to come up and unglued… I’ve seen it on multiple boats; It annoys me. There’s more Seadek with weird patterns. It’s fine.. but I don't care for it.
2021+ not worth the upgrade $ for me, but if I had the choice, it’s a better tug. Easier on driver = better for skier.