The Asics Gel Kayano has long been my favorite running shoe.  Asics perfected the fit with version 16 & again with version 17.  However, a change in materials has ruined the Kayano in the version 18.  Stiff material placed at the outer sides of the shoe & a stiff flap that extends over the front toe make the Asics Gel Kayano 18 downright uncomfortable.