Ever since my local running shop put me in the Kinvara, I've been hooked. Over the past few  years, I have owned about 6 pair of these shoes, both the kinvara and the kinvara 2. I don't feel much difference between the two models. Haven't yet tried the 3. However, I go back and forth between buying them locally and ordering online (out of convenience) I really do love these shoes and encourage everyone to at least give them a try. They have a 4mm rise so it's more a minimalist shoe as far as structure and cushioning go. I wear them for running, strength and conditioning and I relegate the older pairs to my 'running around' shoes. Can't like em enough!!