I have 3 pair of Keens.

2 pair of Chacos.

The Chacos are the most comfortable, but the Keens are awesome too. I can wear all my Keens at work. Can't wear Chacos at work.

My oldest Keens are about 2 years old now. No problems with them at all. My newest Keens (the Bronx sneakers) are falling apart where the outsole meets the leather. Kind of a bummer, but I am really hard on shoes at work and I wear the sneakers quite a lot.