Very noticeable..
You are severely punished with lost distance for missing ding by more than say 2mm, 1 or 2mm either side and ur distance is still about right and that is enough forgiveness for me..
They are incredible clubs and most times you need no spin at all and I play with the Callie z (admittedly slow meter), with these balls they go roughly rated distance with full bs and about 5-8 yds further with no spin at all, so controlling the distances becomes a lot easier, ESP in wind!
I would say avoid spin balls when you get to L90 as they become inconsistent in wind..
Don't even hire them when you get to 90, just buy them and enjoy the ride :-)