I am not a professional. I just workout and run at least 3x/week. I was kind of skeptic when I bought this pair of shoes as I am used to those other name brands. Now, I am a believer! I have currently the Reebok Zigtech, Nike AirMax, Shox 2 and the Asics Gel-Kanbarra. This is the most comfortable shoes that I have ever tried on and used. Like the other reviewer said, you feel like in Heaven when you wear these. I know it's an exaggeration but compared to others, I have not tried anything else that can compare to the comfort and support that this pair provides. If I have the choice, I would definitely wear them for work :P Sizing is the same as compared to my other pairs. Plus, they are made in the USA! Support the local economy :) Only downside I can find right now is it's a bit pricey. I can't say anything about durability as I have owned them for only a couple of weeks.