Extremely stiff out of the box but maybe that's a good thing. I'm new to running and a big guy...like defensive lineman build. I need a good solid cushion to keep my knees and shins healthy. These shoes seem to be extremely durable and well cushioned. My only complaint would be that they were just not very comfortable at first. A little narrow and my heels seemed to lift out dramatically at first no matter how or how tight I laced them. I've only worn these a few days and have put just over 12 miles on them and they seem to be getting much more comfortable as they wear in. The true test for me will be how well they hold up. Overall, I am cautiously optimistic.