I am a longtime fan of Asics and have worn several styles over the years - always size 12 - these however had a tighter toebox than usual and compressed my toes (would surely cause an ingrown nail on my great toe had I worn them) - so had to return (sadly, with return shipping charged to me).
Upshot: Still like Asics but will only buy from Brick & Mortar - so I can try on to ensure proper fit / accurate sizing - from now on. Would be nice if Amazon offered free return shipping for Prime customers in the event of a poor fit.