If you haven't used many high-end bags or pouches, you may think "a zipper is just a zipper". But, think about this.... How many products have you used that feature subpar zippers? You'll see the signs of a cheap zipper when the pull tab snaps off after a bit of use and the zipper will eventually come off track.
With YKK Zippers, you simply don't have this problem. They are as solid as they come and work every time.