I think the Sprints are the most versitile model they have, it might even say that on the website. I have a Black pair of KSO's, I like the KSO's though because of the closed foot. I'm thinking of getting a pair of Flows soon for winter also. also Vibram just came out with a new color for the KSO's, they look awesome, I've seen the new color so far on Kayakshed.com, other sites might hold them too but I haven't checked.
About the smell issue, I wear Injinji Socks with them so the smell is minimal, and I hand wash them, along with the socks, and I only smell a rubber smell, its not bad, but if you don't wear socks with them I'd imagine the smell would be worst.