I don't care about stylish cycling shoes, but SPD is where it's at for functionality and ability to walk in the shoes. Walking with Delta cleats (even with covers) is miserable. I could go hiking in my Sidi Dragon 2 shoes with SPD cleats. In fact I have gotten lost a few times exploring state forests on my cross bike and had to shoulder the bike and walk a few miles through the woods in the rain. Could NEVER have done that in road shoes with Deltas.