My only beef with these "fitness bands" is their lack of being able to tell you how accurately you sleep at night. Without a heart rate monitor, there's really no way to be accurate other than to say you were restless versus laying still.

AFAIK the only product that does this is Polar's fitness band. And only because you can link their heart rate monitor to it to give you additional fitness information. I could be wrong to think they're the only one combining the two.