I've had a few balls crack around the finger holes.  No big deal, it can be fixed, and the balls are still usable if i didn't have it fixed right away.  Some time last year, my S75 cracked from one of the fingers clear around to the thumbhole. First time that ever happened. I heard a few had the same experience.
I just pulled out my Bank from the box (haven't used it in a little while and stored it in the original box) and found the crack. Same thing, from the finger hole clear around to the thumb hole.
I have about 15 ball, not including my kids balls, all different brands, Hammer, Storm, AMF, 900 Global, Ebonite, Roto Grip. The only 2 that cracked like this were 900 balls. Switch grip and inserts could be partially to blame, but my other balls are fine.
So what's the problem?  Quality? Ball driller?  Storage?  All of the above?  
I like 900 products, but I cant be throwing out $200 in the trash.

I know it sounds like I'm in denial, but I'm not.