If you are an overpronator, this is the one. No hype. It's amazing. There is a reason the Kayano is considered the crown jewel of premium trainers. Totally worth it. Smooth interior, bouncy ride, virtually no warm up period required for serious runners. Gorgeous colors. There is nothing I would change. Treat them like gold and they will get the average person through a marathon. Esp useful for heavy people or those who are hard on shoes/run on hard surfaces.