You might also look at the Fitbit - I have heard good things about it, too. http://www.amazon.com/Fitbit-Wireless-Activity-Sleep-Tracker/dp/B005PUONIK/ref=sr_1_1?s=sporting-goods&ie=UTF8&qid=1343434551&sr=1-1&keywords=bodybugg
I found the sleep tracker to be most interesting, too. I have always known that I am not a morning person and have always felt that my best sleep is between like 5 am and noon. The GoWearFit absolutely confirmed that. Of course, that sleep schedule doesn't really mesh with my work scheduled, but it was confirmation for me that I wasn't completely crazy! But, it was all interesting. Let me know what you decide and how you like it.