I got one a few months ago (the "charge", i think). I like it, but it's not perfect. It is a good motivator, since it tracks your steps and stairs and exercise and sleep. It's not totally perfect in interpreting stuff, but is pretty good. The things I don't like about it: 1) i've got to remember to put it on! (that's my problem of course!) 2) it's accurate, but not totally. Close, about 85% accurate. But it does help with the motivation to see progress. And I need all the help I can get!
Enjoy!
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Nothing witty here...