Used to only run in asics for many many years and over 50 triathlons, but they discontinued my shoe so I was in need of finding my next shoe. I began my search with another asics shoe, they felt fine, but couldn't run back to back days as the pounding on my body (knee) was too much. I then tried the Adidas Supernova GT, so much $ and comfort at first, but developed horrible ankle pain, so bad I couldn't even wear the shoes to work. Finally I found ON Cloud from a person at the gym and just love them!! So comfortable, no pain EVER and even wear them when I am not running, probably going to get a pair just for work. Highly recommend!