I have 5 pairs of Peregrine 10s which fit great and I enjoy using them for trail running. I just made the mistake of assuming Saucony wouldn't ruin the shoe in one version and I was wrong. If you like Peregrine 10s, you won't like 11s. It amazes me why sneaker companies need to change a particular line of shoes so badly. Just call it new shoes. I have $120 dust collectors and will be switching to a new brand. Great job, Saucony loses a customer.