I'll take a look but I really like the data output I get from BodyMedia and Jawbone has acquired their technology, so I'm really inclined to go that route. I wear a watch anyway, so a bracelet won't bother me, and it looks like thise rubber wristbands everyone wears so it'll be incognito in that regard. The best thing about the BM and Jawbone devices is that they differentiate between moderate and vigorous activity by monitoring your heartrate and I think the one I have works with Garmin heart rate monitors to provide info about that as well.
So much technology available! It's hard to choose!