I am an experienced runner and have worn New Balance for over 20 years. I have gone through many of their models and have always been satisfied. 1540s - pure garbage. The heels are worn out in less than 50 miles and my ankle hurts. Also, their "customer support" is a completely fake name - they don't care. I just don't know what happened to my favorite sneaker company and their products. I will definitely look around for another manufacturer.