I tried all kinds of boots on and nothing would hold down my heel. Then I tried on the Salomon F22's and they were simply amazing. They are super comfy but still stiff, light as could be, and they have an awesome quick lacing system. I call them my Jesus boots, they are that nice. I will never have anything but Salomon F boots from here on out. They didn't even really need to be broke in. The autofit liner conforms to your feet, and the inner liner is fused to the outer boot which makes the footprint smaller and gives you amazing feel and response.