I bought a pair of these about a week ago. They were comfortable right out of the box. I run off road more than I do on road. I bought them primarily to train for a super spartan. I have yet to really trash them out in mud pits and whatnot. The midsole and heel have a nice gel-like feel. Real bouncy. The rockplate adds some bounce to the front of your foot too. They fit nice with lots of toe room and the top of the shoe doesnt strangle your feet or ankles. I bought the orange ones and they are very loud to look at. I figure they will get dirty soon enough and it will probably be less noticeable. The lugs are not too agressive that you have to stay off concrete. I have ran and walked on concrete wih them and they feel fine. The lugs show no wear as a result of it.