I love these shoes. They seem to have the right amount of cushioning and support, but remain super lightweight and flexible. I'm already on my fourth pair, and I got my first in January 2011. I typically run 10-15 mpw, unless I'm training for a race, then it can be 20+ miles for a few weeks. BTW, I use a year-old pair for hiking and trail running, and plan on taking them with me to Tough Mudder next month, and afterward I'm rewarding myself for completing the event with a brand new pair.