All three colors are nice. I own the 666, as well as a few others in dark brown suede (sometimes referred to as mocha kid suede). I own models in snuff and tan too. Of the three, snuff is my favorite.For your stated uses, I would lean towards snuff and tan. However, for me, tan is almost strictly a spring/summer shoe whereas snuff and MKS are year-'rounders.If you have plenty of snuff in your collection, I think the 666 is a viable option.