I've had these 4 years and they are starting to wear out. I looked online recently and discovered they were discontinued and replaced in Keen's lineup with a sandal SPD (don't want that). I have looked at Chrome, DZR, Quoc Pham, etc. but haven't found a worthwhile replacement. I wanted durability along with something I could wear to the office. Not looking for something with an edge or trying make a statement, but rather shoe that would blend in. Any suggestions?

Backup plan is to do with stiff non-SPD shoe.