These shoes are very good at first, but with age, they feel more like bedroom slippers.<br /><br />The sole wore out very fast, and I don't even run on pavement.<br /><br />Initially, I thought these were an improvement over my Brooks Adrenaline, but I feel otherwise now.<br /><br />The main problem I have with them is the squishy heel. The bevel canting seems to control pronation well, but the midsole is squishy enough in the heel that I think it is extra strain on my Achilles.<br /><br />If you have good and loose Achilles tendons, go for it. It is more of a forefoot type shoe, I'd suggest something else if you are a heavy runner.ed these shoes is really on their game. I am glad to have my legs feel young again. It is unbelievable.  There is plenty of room in the toe box, and you will find yourself progressively tightening the laces for the first runs.  The cushioning in the forefoot is slightly better than the Adrenalines. You will still feel large gravels if you run on dirt roads, but not as acutely. The shift of the foot plant to the forefoot will give you better placement accuracy on gravel.  I also think these are slightly cooler then the Adrenalines, perhaps due to the thinner tongue. My feet do not do well with hot shoes.  This is an incredible shoe that has changed my life.  I am wearing the same size in this as I did the Adrenaline, but this seems a wee larger. In fact, as I progressively tighten the laces every couple of runs, I am wondering if I would have done better to go one size smaller.