pricing and available parts....this said, the storm is a nicer gun in design, but sorry, the storm is not more accurate and more blablabla than the glock. it's a matter of what you're looking in a gun. personnaly,i'm more inclined to look for reliability and accuracy than aesthetics. then,i dont have first hand experience with the storm, but i have quite a bit with glocks of many calibers.....true it's ugly, a brick with a handle might make a sweeter visual impact than the whole glock line-up might, but i wouldn't put my life on the line with anything else than a glock in hands(or two) . just my opinion .