some like the schrader because they can use them at gas stations to fill up? Found years ago, that few had their compressors or gauges set so that any more than 60 psi could be put into the tyres, which will get you rolling but not good enough on a 32 width tyre or less. Also have found the issue that whatever depresses the schrader valve on your pump to let the air in is problematical in actually pressing it the right amount to let air in and/or causes leakages greater than the rate one can pump it in. So for high pressure bike tyres, presta for me.