I know that lower heels, round or snub toes, some padding, and soles that grip are all essentials for comfort, but what else should I be looking for? What are some comfy brands that are not necessarily "comfort" brands? Do you find that high end shoes are really more comfortable? Just how high end do they have to be for their to be a noticeable difference over all? Anyone else have a problem with their flats constantly slipping off at the heel? What about patent being extremely uncomfortable? Is that only true of fake patent?