The Vivofit looks really good in the sense that you don't really need to sync it with a smartphone to get the relevant information, it's just there on your wrist. You want something that will tell you at a glance how many steps you've done, and whether you really should be moving around now. I don't think the long-term stuff is so effective. It's a shame it's a bit obtrusive though, I'd prefer if it had the same indicators, but looked like a watch.