I would say that this is the best running shoe I have worn so far. I have owned them for a month so far and they are a very comfortable and light shoe to run in. My heel kind of slips in the shoe if i don't tie them tightly. I would have given these shoes a 5 star rating but after a month of weekly usage one of the gel sole inside the shoe is coming loose. I looked at the other shoe to make sure it wasn't a feature of the shoes but the sole is tightly in place on the other shoe.