And meanwhile the tube industry....keeps making them tubes. I,d be willing to bet that niether one is supier to the other. But only that, you choose which tube best suits your own needs. For instance, a deep rim may have to use a presta based on the leangth of the stem. While the rest of us un-worthy wheel-sets need the tried and true schrader valve. My point of course" ride until ya get a flat, fix it w/ what ya need.