I've always wondered which weight cymbal provides the longest longevity. Now, by longevity, I'm talking about the resistance to cracking, etc. For arguments sake, let's assume that the drummer has a perfect technique on hitting cymbals and strikes them with average force. Which weight cymbal would you consider to provide the best longevity? From my personal experience, I've cracked more heavy cymbals than their lighter weight counterparts. Would this be because a lighter cymbal will absorb more impact and have more "give" to disperse the shock wave? Would the opposite be true with the heavy weight cymbal not having as much ability to flex after a strike? Does the bronze composition (B20, B12, B10, or B8) make a discernable difference in resistance to cracking (i.e. one material being more brittle than the other)?