Strung up my ki 5 the other day with Pacific Tough Gut 16 at 62#. Went to put it in my bag today and the gut was broke near one of the throat piece grommet holes. This isn't the 1st Pacific Natural Gut to break before being played with either. I've never had this problem with Klip Natural gut. And this was ther "Tough" gut. I cut it out and strung it up with some Volkl V-Icon. The Volkl V-Icon has a "resin" feeling outer coating, so the crosses don't pull quite as smoothly. Babolat and Wilson charge too much for their guts, so I don't get theirs. And for now, no more Pacific Gut.