Callaway Tour I(s) vs Tour I(z)

[In the woods]

Awhile back I posted about the comparison of the I(s) to the Pro V1.  After all the post and personal trials I decided to go with the Callaway.  My iron play has improved since I made the switch the only problem is now I am completely destroying the I(s).  The cover is literally peeling off the ball.  The question I am posting is, how do the two Callaway balls compare to one another and is one more durable than the other.  I love the I(s) and will continue to play them but not all the time.  What are your opinions?

[Ben]

If you want to stop tearing your ball apart, its time to get some wedges with conforming grooves. I used to play the XForged wedges with the MackDaddy grooves, and yeah, I feel your pain. One clean hit and and it looked as though the ball had gone against a cheese grater. I now have the Jaws with conforming grooves and that is nowhere near an issue. I can play the same ball for three rounds.

As far as which ball to play, s vs. z, I use course conditions as my determining factor. Mainly firmness of greens. z for soft greens, s for anything else.

[Domenic]

I used the Is and wished I wouldve been good enough to reap their benefits, but now im better but gonn on to try diff balls in my quest for the perfect one